SCIENTIFIC ABSTRACT GROSS, YE.F. - GROSS, YE.F.

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• Collection: Scientific Abstracts
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• Release Decision: RIF
• Original Classification: S
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• Document Creation Date: January 3, 2017
• Document Release Date: July 27, 2000
• Sequence Number: 4
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

57-9-36/40
AUTHOR# Gross, Ye.F., Zakharchenya, B.P., Pavinakiy, P.P.
TITLEs Diamagnetic Exiton Levels and Cyclotron Resonance
(Diamagnitnyye uroyni ekeitona i taiklotronnyy rezonano)
kRIODICALs Zhurnal Tekhn. Piz,, 1957, Vol. 27, Yr 9, pp. 2177 - 2160 (USSR)
ABSTRACTs New phenomena are described. Nearer towards the aeries borderg
where diamagnetic displacement in the case of a lacking magnet-
io field attains the amount of the distance between the neigh-
boring terms of the seriesp a spectrum, consisting of nearly
equidistant lines, was observed at a di 13 talc* between the lines
of R - 29 ooo0ersted of the order of 2 am- . This striped speo-
trus in continued also beyond the series boundary, where, with
a lacking magnetic field, (H-0) the through-going spectrum which
corresponds to exiton dissociation is located. The farther one
penetrates into the shortwave range, the less distinct does the
structure of the spectrum become, and the spectral lines ap-_,
proach more closely to one another over a distance of 1o6 am
Hereafter their distribution becomes irregular. These lines are
observed on the bass of the through-going spectrum, where its
intensity does not take a monotonous course but shown absorptim
maxima, The distance between the maxima is reduced as the short-
Card 1/2 wave part of the spectrum is approached. Thus, the spectrum

57-9-36/40
Dismognatic Zziton Levels and Cyclotron Resonance
here consists of absorption maxima upon which the aforementioned
striped spectrum is impressed in form of a thin structure. The
intensity of the absorption maxima becomes weaker to the ex-
tent as they shift towards the vdolet part of the spectrumf and
coalesce with the limit of the continuous absorption. Investi-
gations showed that the through-going exiton spectrum is a su-
perposition of the absorption spectra corresponding to the exi-
ton states at various )a-values is the magnetic quantum
number of the exiton. There is ; ~ig-ure and 2 Slavic references.
ASSOCIATIONs Physical-Technical Institute AN US8R# Leningrad
(Piaiko-tokhnicheakiy Institut AN SSSR, Leningrad)
SUBMITTEDs July So 1957
AVAILAM Libr&ry of Congress
Card 2/2

AUTHUA: :,i. 11. 5o-1 1-22125
Vol lkeji~.;htej n
,
Sciences
TITLL: An International Symposilm on the Hjuru6en Bond iii Ljubijaia
(Mezlidunarodivi ioiLipoziu", po vodorocinoi jv,azi v Lyubljuiie)
PERIODICAL: Veutnik A! Nr 11, p,.. 'JSSR)
PSSR, 1957, Vol. 27.
ABSTRACT: Scientists from YiAgoilavia, the and iaaitearopean countriei;,
Au.itralia, the USA, Canada, the USSH, Scji.din~,via and the itste
of Israel particip~ited in thL symposlumheld frow Ju1j 29 to Au-
gust 3. More than 6o upeakers 6ot a ht~aring. The soviet delega-
rusg -talked on "Tht: vibration iipectruza
ticn read 6 papera: Yt~.F.G
l
of the hjdrogen bond!'.- b-fi.lihigorin on "The t-,uture of the hy-
drogen bond anu iti influence upon the vibration- and elec-
tron-spectra of the molecules", V.M.Chulanov,%~,.ij- on "The 6pec-
troscopic irivestig3tion of the h./drogen bond" , Y.V.Vollken-
whteyn on "The behavior of the hjdroge: bonds '.r. vitrifica-
tion (steklovanije)"t N.D.;~okol(,v "Uri the .,aaiitam theori of the
1j, droeen bond" . A.H.Terunin and V.Filiaojwv "The h.,Lro,6or,
bond betiiL-ui. adsorbed iao1t:cul*_-;. and thk~ 4tructural OH-groups
on the jurface of' wolid bodicii". papuru werc. devoteAo the
Card 1,1 3 spectrosicopy of the lk,uro~,t:n bond. li..portant izformation was

Art Int--;rnat-~un,11 Simpouiu.-I 01i thk- fiuro,~t;r~ Bond ii. Lj.A*;IjAz;,t- Ic-11-~2/23
Cird 2/5
#given by bzh-PiLiuntc-l (jsk-' on tjjv upectral pi-okertie4 of the
compoundv at lo-a tvmpvruturtv~j -vid G.Marrit,ai; On the
irivi~jtijj tion-reb;i1t;i uf th,,- jr,atallint; Luuuific~Ationm of' cel-
lult,ie bi meaj,.i of* t"iL. wethud of i-cl-irizvd ij,-`rirvd Wpectra. k;.
Lip'lert (GerrAMI ieder-il hepublie) g,.ivu An vxtLn~iive rurvt.,' of th(-'
influenco eterted bj tht! hjdro,,;un bonds a,-,on the electron-
spectra. The st:iiiiion i:, which the pul-L.Leipalits cliveciallj dealt
with the problems of thu criiitallographj uf the compo4nd4 with
thowe uf hjdrogen, wAii ujoeiied bj bzh.Bernal, Lngland, with an
c,xtenuivo report ort the i,.-irt pl;-tjed bj tht~ li~drogen bonds
in uolids and in liaids for which the particiluntz ahu4ea greut
intureat. R.Popinwki~ (USA) talked on the inveitigation of the
h.~ drogun bond uj ;aeanu of the X-ra.~ and neatronographic me-
thod. U.Shneyder (Canada) and other& also dealt witis t~,ia methoc.
The following seswionii maijili dealt -with priubltmi of the theorj
of the hjdrogen bond. Speaker waa: Ch.Koulzon, EnSlAnd. His
at:itement caused a livelj- dijLcuvuiQn iii ahich Lbove all the
Amvrican 4cientiutw participated. Althoa6h thert.- exiwt~i no itrict
definitiozi on the conceiAioi, of the hjurodex. bond , , all p,,r-
ticipantu in the diucu4iiion agreed that the eviuence of the
quantura-mechanical procear. of t~,e fur"Atiuii uf a donor-acuuptor
bond 'donorno-aktaeptornaja 4;vj,a:;') Acre nu~;,L-siary for the

Aii Internatiorvil Simpomiura Ori the, Bond
AVAILABLE:
determinat n of the hjdrogen bond.
Library of Congress
- , Lj~i~ljanj. 3o-11-2~1/23
C~ird 3/3

UT 1, 0 1
I I"' a'
T
PERIODICALs
The Spectrum
Wpe~tr vozbizh(J(--nija
Uji),Ahi Fi,-,.
of the Excitation of Exittons in :t CrystLl Lattice
ek.sitonov v kri3talli,,~11nes%oy reshetke)
Niuk , l?57, Vol. 63, Nr 5, 575 - ill (LTSSF)
A13SMACIl'-. Tlhe, present survey is arranired a.; follows: Introduction, inve3ti-
ti on of the s truc tur e or the Ion,;-w.-Lve edge of the principal
.,tb~!orption of a ciprous oxide Cryalt'Ll at 1*00m te%lPeraturc. and
,,,t the temperature T K nitroi,-en I.-,e hydrc~;en-
like jerie.-3 -X narrow ;Ab3orption lites. TI,P ~),,'-ical spertruo
of t~:(, excitl;tion of exitons in ~ crystal lattice. The yellow
exiton ocrie.3 in u CuO-cryot-tl. Comp,-Iri3on ;f the exiton sl.,ec-
trum wi Lh that of the'hydrogen atom. Free Lnd i;ularized exitons.
~he t;rorm e:,iton aeries in a Cu,.0 cryzta.1 at the temperature
of liqu-, "I nitrogen (77,30K) and-c-t Vie teL,,perature of liquid
helium (',' - 4,2 K). (The wave len~_;th of the newly found aboorp-
tion lines of the yellovi :;nd reer oxiton series in Cu 0 -re
~;iven in a table). The exiton jp,.~ctrum in Cu,C, ;,. T - 3,3'y
(liquid helium). '2he Stark effect -.t the line"s of the exiton
Card 1/2 .1poctnum ('411 ~&nd in ..r. inhomo.-,!neous electric field).

3- 5
'j,he ,J")tjc Lol* Ov! i;xc i tn ti oil of Ex i , on in IL C ry;~) L-1 t . i (- '!
'1hu Zeeman effect or the (if thv yellow exiton 3erieu. The
inve.,iti~-,ation of thu 3tru,-;tu,-(! of the 11vincip-1 aboorption in
utht~r cry:itals. (Expprimental AntL dire ,tvil,,-Ll)le orly for some
cryat..,13). -2hus, a cumplicated ,itr-ticture r.(jn3i3tin-:, of a -roup
of 11 narrow and 4 br-3-Aer ban(In wan objerved in the .3pectrum of
cadmium oulphide at 4,2 () K at tlio :-.b-iorplinn edge. Deoides, a
nonoider,able di:jtortion of lineo wao oboerved in ti,e cuse of
oume CdS cryut.,.13. 1.1jo in T!.1,J2-crystL1j a utructure of the ab-
sorption eoae Yr-ja objerved. In Pbj2-.-ryjt.-ILs a jroup of I narrow
lines -waa objerved on the abaorption cd,--e of this crystal at
T - 4,20K. Next, some objervtti,-,)n3 ma-~~e in the case of other
cry3tulu are enumeratedo '2here are ."I fi~-ures, 3 tables and 58
referunct,3, 33 of which are sl,tvic-
AVAIUBLL: Libr-Lry of Con.,~resj
C-ird 211,
I

AUTHOH3 Gross, Ye. F. Corrrupondirig Mrm:,er AN U.5!3ti 20 - 4 - 10
A.
TITLE: The Interaction Between Intermolecular and Vibrations in
Crystals According to the Data of Infrared Spectra(Vzai,.-.odejatviye
vnutrimolekulyarnykh i reshetochnykh kolebaniy kristallov po
dannym infraktasnykh spektrov).
-PERIODICALt Doklady kkad.Nauk SSSR, 1957, Vol. 115, Nr 4, pp. 689-692 (USSR)
ABSTRACT: At first reference is mde to the present state of the problem
and to some earlier papers. Thr problem of the interaction of
phonons with the innermolecular vibrations is of great interest.
Therefore the author examines the infrared absorption apectra of
monocrystalline samples of Ba(NO3)2 and Pb(NO3)2. It w&s the par-
pose of these invt~stigations to clear up the problem of the exi-
stance and the peculiarities of the "compound" transitions (who-
se intensities are markedly dependent on temperature). The prob-
ability of such transitions must also depend or. the type of the
inner-ionic excitation and on the typ-3 of lattiQe vibrations. In
the crystals selected here the composed N03- - ions play the part
of structural units which have internal degree-3 of freedom. The-
.ge ions are plane equilaterial triangles having the nitrogen atom
in the center. Such a system has 6 normal vibratiuns with frequ-
Card 1/3 encies in the range 700- 1500 cm-1. The samples of lead nitrate

The Interaction Between Intermolecular and Lattice Vibrations i!i 20-4-15/6o
Crystals Accordin:r to the Data of Infrared Spectra.
and barium nitrate consisted of plates 0,3ox1ox2omm or 0,56xiox
x2o mm in dimenoion respectively. The spectra obtained at -16o0
and + 2o0 are illustrated by diagrams. The analysis of the select-
ion rule by tge group theory leads in crystals belonging to the
space group T h to the following conclusions: All inner group
vibrations must be effective in the absorption and this is also
observed in reality. But in addition to that,much weaker absorpt-
ion bands are also noticed in the spectra. 'J:he clearly expressed
absorption maxima that lie s,7mmetrically to the absorption peak
might furnish a contribution toward their explanation. These
concomitant bands might be caused by compound transtions in which
the quantum numbers of the inner-ionic and the lattice levels
aimultaneously change. 'I:hat meAns that, when a light quantum is
ab3orbed in these transitions, an exiton is produced and at the
same time a phonon is created or disappears. Most of these weak
bands can be explained by theocheme given here. There are 41 tables
and 19 references, 3 or ;.hich are Slavic.
Card 2/3

Th~- In! erictioz. B!~t*,,;!--on In teri--to I aculijr Litt, 1-,- 7-k'b:--.' .: 2o4,-15/6o
Crjstal3 Act,ordin,,, to thr D-ita of Infrared Spectni.
ASSOCIATION: Leningrad State Univenuity imeni A.A.Zhilanov (Lenirgradskiy
gosudar3tvennyy universitet imeni A.A.Zhdanova)
SUBMITTED: March 23, 195'1
AVAILABLE: Library of Com.,ress.
Card 3/3

GROS3, E. F.
Institute, Acad. Oci. Leninipad, V. !;. S. P.
"Opeti-cal Spectnim aM Majzneto-Optical P:,upertjes (if
.1
paper submitted at Intl.' Conf. on Semiconductors, (1UPAP) 1:-, - 22 Aus 56,
Rc,chcater, New York.
Ahstrant available.

A I ITif OH: Groan, Ye. F. , Correaponding Member, A', O."'IR
TIT L'-: An Importan*, Problem of Modern Physici (Vaznnava problems,
sovremennoy fiziki'EXeitODA in the Crystal J,attice (Eksitony
v kristallicheakoy reshetke)
PERTODICAL: Vestnik Akademii nnuk 19A, Nr 10, pp 11-19 (IISIS'R)
ABSTR.ACT: The concept n excitons was introduced into physics in 1951 by
the 3oviet scientist 'ia. 1. Frenkeil. Exitons are supposed to
be canable of migrating on a crystal. In theory the idea of
Frenke? I -was developed further by the foreign scientirts -
Vamler (1957) and N. F. Mott (1958) among others. According to
V '., .!xiton3 are hydrogen-like quasi-atoms which move on
crystals, as well as neutral forms. in the opticheskaya
laboratoriya Fiziko-tekhnichpskopo inrtituta Akademi-, nnuk
(Uptical Laboratory of' the Physico-Technical Institate. AS 11:3SH)
some phenomena were recently discovered which prove the exist-
ence of excitone in the crystal lattice (N. A. Karryyev, B. P.
Zakharchen', A. 4. Kaplyanakly, 11. ;. hazbtrin, M. N. Yakubson,
V. V. Sobolev, and ozn(~rs). The pattern ot GKcitOn movement ',
Card 1/2 the crystal lattice is represented in figure 1. Figure `-~ snc~ws

130VI 30-58-10-2/55
An Important Problem of' Madern ftcltons in the Crystal Lattice
the spectrogram of a hyarogen-like series 0in the crystal of
euprotin oxidp at it te in oor,xLurt! o I' Ti K . kn the of foct!i o I
'hr
.) ark and ZePmnn ooserved in tne exiton spectrum prove, Cedtons
tire huge forms in tne crystai. Mention was maae of' the studif's
by A. G. 23amoylovich and L. L. Korenblit Tw- accitons of
small anfi large radius can exint in one crystal . In figure 5
patterns ~I' para- and ortho excitDne are chown. Recently I.
Mikeuti 2) reported on tn, eKelton level in his theoretical
s cudy . I . M. DYKWAII, Pekar, i . A,ns (-I 'in. L. T . Korovi n.
and 1. 1'. Ipn,-r1vn n1so work on thiet, problom. Figtire 4 C,,.vfp ti
diagram of the origin of* rpsonatice luminescencp and figuxe -
of indiAcinp luminescen(-e of excitons Apart from eilect-ronse
holes nnd phonons , exc:Ltons play an important role in many
physical phenomena in the crystal lattice. As thp stuaies of'
,~. V. and A. F. toffe (191;6') show, excitans DIny an important
Dart in the thermal ccriductivity ri: crystals. ~~er~f-n-zn of
excit,ons and their roit- in the crysLal lattice .s -.t;.11 in its
oeminning ntrt;,F-t;. There are n figureq.
2

fi,,. '~akharchenya, 57-2-2/32
ITU* Ionization of i~xcitons in a Cu 2G Cr.-stal by an i-Aectric iield (Ionizat,
slya eksitonov v kristalle Gu 0 eluktrich"kin polem).
2
PERIODICAL' Zhurral TekhnJc),,evkr)y ~tztkl, 1956, vol. 26, !!r 2, jq). 231-2112 (U53h).
ABSTRACT: Rtfererxe is mrLde to thr-' Lreat difference between experimnt and tbeory,
tLe latter proceedine from the correct assumption that the exciton in
cuproud oxide is a Motta exciton. Iq this difference was still Undeter-
mincd, the Stark effect viar. aLain investigated in a OU2 C crystal, where
first of all the tet-t condlti,~ns vt(-re perrecte(i. The results obtained
showed a 6ood a6reement with thenry. Firqt the deficiencies tif the form
I nl*
ms!r tests are enuv.eratt-d arid it is shown Wat all these sources - error
in the determinations ,f t~~e fielcl v(.,Itat;r:,g in wl,ich a successive dism
appearance of "fie me:nb--~rs of the excitorqf-rJes takes place may easily
be renoved when the oizervat1cw ir the drmain investigated are carried
cut by ~-I`(.irLia! iradient witY the aid of
,ir-)b,313. Vie )rrol--3 i~iir, a nriall Cit,:) plate 1),y rpttans
),,A in -,w prober, 1.al a distance of 1-. 2 r~:i
frofq f,hf. nilv,!r ba3e Tl- 3tark effect was 4.:ivt.-:-;t1z;ated a~
Card -112 thf., ex-.1tan lint!,-; -ind(w t.,oil.' !AP)n.,i nf cooling of Ue crystal to the ten-

Ionization of Lx,,Aton.~; In a ,'ti20 'ry.,Aal !~~! 'ji _'-j.-(Aric rijL,I. 5,7-2-2/31
-)f lirjul-f nilxjuen. A qpec1.rf,>erap)j witn a dispersion of lo,-,5
kl:rwl Wan for tho '2:,,n,~rvatton of the !-.pvt-J.rtm. i0ie comiecuLiv,,! U3,
app,jarance of t"ne m-,.mber,; jr, tt,e (tx(-U.,)n-.4ieries with the quan'ltri
-1
numlber3 n - Ito3j,2 d;,.e to Uhf~ -~f* the !xnlton b, tiit, electric
field wa.-3 rintine.1y oboerv-d. 1t. bee-IM0 evident tliat a field volta~-c
~'.Jv excitorl from U,
of 2,5 W/crr In for tf:e A' , e
state with r, 4. In t1w caste, -,f n 0 3, L - ? 1,7/cn an;i in tl.,~ cw~e of
n a 2, 29 kVcn, valwr, for tfie field volfaes are hi.,;iily dif-
ferent from thove, mr.-asurcd t.,arUix amt lij- noar thone obtained by :;amoy,
lovich and Korenblit for tl,c :;t*,xr'- offect. I. Folovnikova, Diplx~antl;
ka in t,he 17tatq Un1v,_-r.3i' 1 Lerii-,;!rad,lielped ir. Mle exi-,crinf.-at.
T`iere are 5 reforuncei. It )[, V6101 am Slavic.
ASSOCIATIm'. TeehnicaJL Physics ASU33R. L-V.-i,;rad
InStIt.ut V,4 553R. uenint-rall.
3Ub7'.rTTi:,D. 101pot 229 1257.
AVttjb1BLE. Li5rary Of COng1'f,1.33.
Card 2/2 1. Ci7stals-Excitation 2. Crystals-Ionization

ti UT! *, OR ~-'-ross, Ye. F., IW-birln, 57-2-4/32
TITLE: The Influence of Deformations on tho SF,*-ctr~ri of CdS Zry3tals (vliyaliiye
deformatsiy na spektr krist-allov Cd3).
PERIODICAL: Zhurnal Teklinifteskoy Fiziki, 1958, Vol. 28, Nr 2, pp. 237-239 (USSH).
A-'ISTR,KCT: Tests were made here to find O'AL whether the deformat ions caused by the
pastinC on of crystal:q are re5ponsible for the disto.-tion of lines in the
ab3orption-spectrum of CdS-crystals. The lent;thened CdS crystals was with
opu end paited to a spiall, glas.-3-plate. The other half remained frett and
did not rs~st aj;ainst the 'surface of thp glass, In this manner it was pos-
nible to compare the absorption--gpectra of the part of crystal pasted on
and of thq free part at the iame tinre in cne spectrogam Th tests sho-
wed that at T - 0 %o as the
4,7 K a3 rell the narrovy lines 0~V18?-4, IS
bands "i9l6o-Voo t, in th~-. spectriurt of the part of crystal pasted Lc the
Ulass are narrowed to almost half of their former width and are di-splaced
by 8-9 2 toward the short-wav,.-; sile (in comparison to their position in
the free part of the cry3tal). In thln connection the shape of the specs
trum of the thin lines char,-,w!.q in a complicated way, the dlitance between
them becc.-n-as smaller, the intensity is redistrib,ited, t~ie blarring of the
Card 113 lines is diminished and some of them are depolarized. The ab-sorption in

The Influence of Deformatirnii *n ',he lip-Dctr,im of Ilds-Cry.,;taln. 15-1-2-k/32
0 0
the lines AMR57 A and V6'? A in Inten3ified. T1,11P Fart of the crystal
between the two halves (the half pa3ted on and the free haLf) yields a
distorted i,-iaL:e of spectr~ari with a crntinii.-!1.i transiton rrom the Spec-
trilm of the one Wilf (what pa:ite,l ,-.) to U~~e Alide Ono (the rrce Ono).
Analogous distortions were olDgerved after pu'.ting drops of gl-ne up:)n the
crystal. It is shown that the q!.,aatity and the -flrection fcr the displace
ment, in the spectrum dely!nd on Lh,) q~,tan'.1ty %i-A sii;rl of the force
deforming the cri,stal. Thl!i becomes eviclent, fror a comparison col"cerning
the bt-haviour of the absorf,~tionxpec.Lra of DU crystals which ,au L;lued
on glass- and quartz-tane3. Tle .;I~ectmn of' a cr stal-i-art tluer1 on
quartz is displaced to the Ion---wave-side (by (ir. conparisor, to the
crystal-pawt not gluel on) and, sirul-Itaneously with the displacement the
a'osorption-lines become nider. Thi:; di-sPiacement to the long-valre 3ide
Is connected with tha exp"In3ion of th~! crystal by its base (on cooling
quartz contracts les.,; thir, CIS). It 1!7 1-inte~.! out that the p-isting on
of the GdS.-,crY3 tiA IS onto Zla3s anct quartz at T a 4,20K i.-4 to
it-, effect equivalent to an additional rcoling and heating of' thern. The
phenomena desrrihmi `jf~!re stv)w a ijigh sen.-iltivity .~)f the npectrur. of CdS-
crystaL9 to deformation.
There are 3 fizure-3, and 14 SlavLr, references.
Card 2/3

-:;taLi.
Defcrwiitions oi the Spectrw o f C & -, r.,
f" :;,% T 1,-~ 1.1 Technical Physics Ir-ititlite AS U35h. Lp.,~~,%6rad
AN )jott. Lenl%rad).
SUIAIITTLD. july 2)) 1957.
A7 ,,. 1 D, Library cill Congress.
1. Crystals-Deformation 2. Crystals-Test methods
3- Crystals-Test results
f,arl 3,13

57-28-4-17/39
~AUTJIQRj: Gron:i, Ye, F. , Novikov., B. V~
TITLE s On tie Problem of the Structure of a SV-dral Curve of the
Inter:ial Photoeffect in CO-3-crystals (!' voprosu o strukture
spe]-trallnoy ',:rivoj v:,!itrcrn~,o fotocf_'c':Lz,_ v 'Kristallakh
C d 0) ~
PERIODICALi Zburnal 'eclOhnicharill:oy Viziki, 1956 Vol-2'!, Nr ~',, PP-702-783
(USS11)
A-33TRAM This is a letter to the editor. In connection with Ref 3 the
investigation of the spectral characteristics of ph8to-
conductivity in various CdS-moncrystal3 at T - 77,3 K was
continued. Th3ae experiments showed that the shape of the
spectral curves essentially depends on the orientation of
the crystals with regard to the direction of the incident
light beam and an the state of its polarization. The occur-
rence of the absorption lines in the form of peaks or de-
pressions in the photoeffect-curves however, is mainly
not determined by these conditions (Ref 1). but depends
Card 1/3 on the typi of crystal. The crystals are according to the

57 20-4-17/39
On the Problem of the Strucutre of a ipectral Curve ul* tl-e Ir.ternal Photo-
effect in US-Cryotala
nature of the 9F)ectral curvea of photoconductivity divided
into two groupo. 1) At T - 77 3 0K the peaks of the curves
of phot,--onductivity correspond -to the alz~orption lines
A 4870 ~ and A 4840 R. The peak ~,,4670 A is polarized with
the electric vector EJ_C, also the line correoponding to
it. In the declineof the ohort.-wave portion of the curve
of photocan uctJvity wide maxima are oboerved at A4795
and ~ 4730 ~~ 2) The minima at the photocurrent-:!urve here
correspond to the same absorption lineo. Here, too. the
polarization of the spectral curves af,;reas with the polari-
zation of the'absorption curves. In the short-wave part ,
of the photocurrent-curve a wide minimum is here observed
at A 4795 2. -- A more intensive infrared illumination exerts
an extinguishing influence upon the photocurrent in crystals
of both groups. It especially strongly influences the long-
wave part of the photocurrent-zurvo in crystals of the
second Group. Adetailed description is given. There are
4 references, 4 of which are Soviet.
Card 2/3

57-28-4-17/39
On the Problem of the Structure of a Spectral Curve of the Internal Photo-
effict in CdS-Crystals
ASSOCIATION: Leninaradskiy Gosudarstvennyy universitet
(LoninCrad State University)
SMIMITTM 11oveiaber 16, 1957
Card 3/3

57-28 4..26/39
ALITHOR5 i Gross.. "-- --Abolin'sh, Ya. Ya. , Shultin, A. A.
TITLE: On the Observation of the Optico Acoustic Effect in a
Liquid (0 nablyudenii optiko-akusticheskogo effekts~ v
zhidkosti)
PERIODICAL: Zhurnal Tekhnicheskoy Fiziki, 1958, Vol. 28., Nr 4; pp- 032-835
(USSR)
ABSTRACTs The authors here started from the idea whether it was not
possible to utilize the optioo.-acoustic phenomenon for the
determination of the duration of existing states of exci-
tation in the molecules of liquids and solids and to work
out a method of investigation for condensed systems on the
basis of this phenomenon. From these considerations ex-
periments were performed in the authors' laboratory. In
these experiments the optico-acoustic phenomena in liquids
and solids were observed. In the course of these exp *eri-
ments in the year 1952. which were repeated in 1957 such
phenomena were observed in water, methyl alcohol and ethyl
Card alcohol. A perceptible signal was only obtained in a small

or
57.. 26A -26139
On the Observation of the Optico,,Acoustic Effect in a Liquid
range of the modulation frequencies at about 200 cycles. The
optimum modulation frequency at which the acoustic signal
attains its maximum value depends on the geometric dimen-
sions of the chamber and on the frequency-characteriatic
of the microphone whose membrane touches the liquid. The
spectral dependence of the optico-acoustic signal was ob-.
served in liquid ethyl alcohol. The 3ignal was observed
in the domain of from A - 0,95cu to 4ect.where the maxi-
mum amplitude was attained at ~ - 2,~4. A comparison of
the experiments with analogous ones in which a gas had
been investigated shows that the acoustic signal forming
in liquids is many times weaker than that forming in gases.
By a certain perfecticn of the scheme it will be possible
to use.the principle of the gas analyzer by Veyng6rov also
for an analysis of li~fuids, At present the experiments
for the observation of optico-acoustic phenomena in
crystals are continued. There are 3 figures and 7 re-
ferences 5 of which are Soviet.
Card 2/4
2_

( 6' 1- --C -e~, 4r,
r:~ 7
ov I In 'Itst
v0
OP I j ca I - '(70"s t ic ~Xftlc t i n C, ryr, L(l. t; I ir.0 -m i,~ ils t j ~-hesk iy
v.,tekL v krintaliHKI-)
P I -,JI
~,hljrnal tektiniCGeSK0.,,' t'iziKi Yol 28,, Nr 2. U;
experimcncs, o. ---hien pa;)t-l' ar. 'fCCOUnt. for Itfic,
t~cteraiinatjon of' tno opticai-amiitte v.Ytx~ wvrx! rwr,',urmed
nccording to a actifIme t;4.-c,, in wori, .0:1 ?1LILd slibrl.ances (RC1,
'PtIP110 sxPerim(lit!; wi0stantiatt-d the Of :.'Jeh till ~?ft,ect
ill crYjt(ii. It appears from tn. information gnineu that a
uLi-,,,zation of' this eft*#!(,t 111 tflC- 'JI ttjt~ -Jolid
of -i :jub.,t,Inci, dip~vd.~nr on tivther r.,tyr ~,nd mer;ns fire
lWitil n;' improving L)I$- !~xrr-rinPlIt.01 hnd tne. Inatrumj--nt
Per..4 it 1 v i ty. Til LS pit pf-r a I no cov--us r-yiuer~ i ')n vie Zoe I Oct ric
vroperties, a crys-tk sj,rv-,np, !is a The
tic
(Al't-of in anti compil-
r1i t) 1 f~ tP) ~- o 1) t 2 C - ~l 0 Q 1) Ui C1'4~ C t i IF I e 4 :~ -,i I" -'J n 11 L h -A E.
tn.-r- el*lert 'ZI wcitv in t iwchi~lle-salt
1--j 1/2 cr1v.itqj, whion In rjol ojhmpea df,wm. Tf.,~ xatt-n..Lf.y in tj,?th

r~,pt ~ea ct~ ; c -.. rol-(~ t -i n C rys ta i a ( '. *! -2 t -,'/ , 4 r)
the f-lamued down and the free unp. is tnt, ',z-i xpilnat ik.-n
(4 tni;; ;A'!'(7ct is advoincea and it i:-- %.i: iirpla !iv-t the eff'pct in
both c!t.,~ef- is dut, to the s:ime enuit-,- It -Nxiq aijo fourid thnt
tht, intensity of' the opticall-aco,.A~;tic of!'ecl qr%duail., der-'rPASCS
ni'tcr ec;nnecting the light sourct~. Thi!~ is cjnsid*!:-cd to, be d7je
to fi gew-ral incromm in Lemperutore ol t h-? PuAe cryLtal mij
thk~ gr%dual approach of* the .jpper Co-it. j)oint. Ttf. optic:tl-
neourtic cffect in the cryFt-jI ol' Rocliol IP-salt is so interisive
that, it cart be used for the sAution o., a nkimt)er e);* problPms.
The exjj4~-rimentA dj~ecribed In tni:t papor art, at prj--~;-!Pit cun-
tin,ieu by lnvei,~tijyating the -4pectral u;!~trib,;* .on of' the op-
tiral-acoutitic effect in ci*y,-,t.-.i!; and in other
I'Prroelectric subottince,,., Tne experjmmn-~i )re~(nteu in this
:j;~ pt,-i- rkt-;.- Only the t*i rst - tHg., of i rc.-c:i t ig!t t ion, i.; :I, n-.- opt I -,I I
%countic effect, in crystals. Thereare 5 I'iAurf-s and 1 referencf:-,
0 of whien arv :,ovOA.
JUIY 7, 19' 8
2/2

S/058/62/000/005/047/119
A001/A101
AU"MORS: Gross, Ye. F., Sobolev, V. V.
T1'A'LE: Investigation of the structure of absorption, emission and photo-
electric effect at the edge of CdSe crystal fundamental absorption
('Dieses)
PFRIODICAL: Referativnyy zhurnal, Fizlka, no. 5, 1962, 33, abstract 5V227
(V sb. "Fotoelektr. I optich. yavlenlya v poluprovodnikaldi",
Kiyev, AN USSR, 1959, 140-112)
TEXT: A fine structure Is discovered at low temperatures, most complicated
at 4.2 X. in absorption and emission spectra of CdSe single crystals, as well AS
In the spectral distribution of internal photoeffect. Absorption and emission
spectra are strongly polarized. Position of lines and bands in bbsorption and
emission spectra is constant for specimens being in free state, but varies very
strongly in dependence upon strains and stresses in the specimen. Conclusions
are drawn on the observed bands In CdSe absorption spectra.
"Abstracter's note: Complete translation)
L
Card 1/1

S/058
/62/000/005/044/119
A001/A101
AUTHORS& Gross, Ye. F., Hazbirin, B. S.
n'rnix; Investigation of the structure of main absorption edge in CdS
A,
crystals (Theses)
PERIODICALz Referativnyy zhurnal, Fizika, no. 5, 1962, 32, abstract 5V223
(V eb. "Fotoelektr. i optich. yavleniya v poluprovodnikakh",
Kiyev, All USSR, 1959, 61-62)
TEXT: A strong vaxliability of a group of weak thin lines at the long
wavelength edge of fundamental absorption in the region from 4,860 to 0
4,889 A was discovered in the absorption spectrum of CdS crystals at 4.2 K.
This variability, independence of absorption value of the crystal thickness
and dependence of the lines on the state of crystal surface do not warrant
their asci-ibing to the CdS principal lattice; they indicate a connection of
these lines with the crystal surface. Contrary to these lines, strong
bande of shorter wavelength than the narrow ones, are permanent. Their
volumetric origin, a high absorption coeffiaient and regular distribution
Ca--d 1/2

Investigation of the structure .....
testify'on their exoiton nature.
[Abotracter-s note: Complete translation]
3/058/62/000/005/044/119,
AOO1/A1O1,
2/2

S/058/62/000/005/045/119
AO01/AlOl
AUTHORS: Gross. Ye. Yakobson, M. A.
TITLE: Luminescence of CdS crystals at the fundamental absorption edge
(Theses)
PERIODICAL: Referativnyy zhurnal, Fizika, no. 5, 1962, 32-33, abstract 5V224
(V nb. "Fotoelektr. I optich. yavlenlya v poluprovodrikakh",
Kiyev. AN USSR, 1959. 63-65)
TEX:1": A large group of narrow.lines and broad bands of various intensitia3
is observed In the region 11850-11889 A, near the edge of CdS crystal fundamental
absorption. A comparison of crystal luminescence spectrum at 4.3K with absorp-
tion spectrum has shown that almost all absorption lines are observed In emission,
i.e., luminescence is of a resonance nature. Line 4870A and bands 4858-4838 and
1,813-2,805 A, observed at 77?3 K in the luminescence spectrum are interpreted as
the spectrum of exciton emission following their annihilation in the lattice.
In various crystals of CdS, a difference in luminescent spectra is observdd,
corresponding to narrow absorption lines. which is due, In the authoral opinion,
to Impurity and surface levels In the crystal.
[Abstracter's notei Complete translation]
Card 1/1

S/O 5 e/62/030/GG 4/ 1'rj 5/: 6r,
A0611'uol
R!": Gross, Ye. F.. Kaplyanskly, A. A., Novikov. B, V,
1 'ME: Ouructure of photoconductivity spectral curves In c.-Istaii at low
temp-ratures (Theses)
P.-~RICDI CIAL: Ref erativnyy zhurnal, FIzI?a, no. 14, 1,9621. "'g, abntract "E-142 (V sb.
j -1
"Fotoclcktr. I optich. yavlenlya v poluprovoemikakh", Kiyev, k"? UCSF,
1959. 66-73)
Ta*"T The shape of photoconductivit spectral curves ir, cr-ystais with
~!!Zcrete absorption edge structure at 77.1. K vias studied on Cd-t,. Pb12
~;InCle crystals. For these crysta1z. the max1rna of photoconductivity were found
to correspond to the discrete absorption lines ascribed to excitons. The shine
6-c abnorption spectra and of the photoconductivity curves in CIS and
c-lefly deppnds on the mitual orientation of the crystal aX13 c ard the elcc~rl-'
,) crystals, when the absorption coeffi-
cal vector E of the exciting light. in HgI- k
clent In 'the lines is large, a self-reversal of the m&x1ma of photoconductivity
is observed, which Is related to the increased m9nihilation of excitons neAr the
surface, The constant infrared illumination reduces photoconductivity; however,
Card 112

SA) 581621000100 4/ 105/160
-ructure of photaeonductivity ... A06 I/A 10 1
"t
Its action upon the background and the peaks of photoconductivity is different I
in each crystal. These results are evidence of the AImportant part played by 1~I-
,2xci,o*, .,
-
, ns in photoconductivity phenomena.
7Abstracllerls note: Complete translation]
Card 2/2

GROSS, T9.7.; PASTYWAK, 1.
Fine structure of the spectral photosensitivity curve of cuprous
oxide crystals. FIsAver.tels 1 no,1:162-166 Ja '59. (MIRA 12:4)
1. Loningradskly fisiko-takhnichaskiy institut.
(Copper oxide crystals) (Photoolecticity)

GROSS. Yo.?.; NOVIKOV. B.V.
Fine structure of the spectrum curves of photoconductivity In
cadmium sulfide crystals, Fiz. tvor. tela I n0-3.'357-362 Mr 159.
(MIRA 12:3)
l.loningradakiy gesudarstvennyy universitet. Irizichookly Institut.
(Cadmium sulfide crystals) (Photeelectricity)

GROSS, Te.F.; FASTRUTAK. I*
79.rivation of polarons in crystals during the absorption of light.
Pis. tvar. tela 1 ne.3:518-521 Mr 159. (MIRA 12:5)
l.Loningradekly fisike-tokhnichookly institut AN SSSR.
(Excitens) (Crystal lattices)

GIWSo Te.F.; PASTMffIK, I.
]Vfeot of surface treatment on the structure of the curve of spectral
distribution of photoconductivity of cuprous oxide crystals. Fix.tyer.
tale I no-5:837-840 MY '59. (MIRA 12:4)
le Loningradskiy fiatko-toWnicheskiy inntitut AN SSSR.
(Copper oxide crystals) (Photoconductivity)

I,.- GROSS, Ye.Y. ; I'ASTRIIYAX, I.
- _'Ilt!~ I
Optical spoctrum of the formation of polarons in cuprous oxide
crystals. Piz. tvar. tela I no.6:973-976 Js '59. (KIRA 12:10)
l.Leningradskiy fisiko-takhnichookiy institut AN SSSH.
(Copper oxides--Spectra)

AUTHvHSs Groa s , *5tF, -axid Sus lina, L.O. SOV/31-b-1-24/30
TITLE: W49k., tt',P-Aziat cl-f ZrZ sai tL* of Their Ab4orption Edge at
Low Tempe.:ratruis (14onocris tally Za3 i. spektr ikh krays, p3gloshchwdya
pri nizirilch tampamtursk-li)
F%RiODiGALs Optlka I Speictrcskopiya, 1969, Vol 6. Nr 1, pp 11.5-117 (USSR)
ABSTRACTs Znttg.-, vwm '~j -ablimation of very n6re powder in an
atmosphere of argon. This inethcyi in similar to that employed for
6roving of CdS monocrystalg in tne, laborat:-ry of S.U. Ryrkin, at the
Physico-Tachnical, Institute of t4v% .'.cad^my of k'lcianneq of the U.S.S.R.
Sublimation was carried out In a qaartz tube (1, in Fig 1) placed In an
electric furaaoe (2, In Fig 1). A quartz boat 3 filled with ZnS gas
placed in the het6vat part of t.Na tube 1. This boat nas heated to
12700C. Before the electric furnace was switched on,a stream of argon
was paxsed for I hour vim a snall tibe 4. this was done to expel all air
from the system. 'Ilia alectrte furna7s was switched on for 2 hours.
During this time the vapours of W produced frm tie powder were moved
by a stream of argon to a quartz. icreen 5 ~'*D x;UjU ax7vta3a ve"
found to Kryw on th.a sereen and on the tube walls near It. The single
were in the form of colourless plates of 25 x 5 mm araA
Card 1/3

SOV/51-6-1-%4/30
Sbg3w Cq*&U of ZaS anf. the 8"crtr= -if Their Absorption 1kijt,'q ? - L-,-w
and their thi--iMOS3 varied from 0.1 mia to 0.1 p. 111*m$.WAe arywta" wt:re
found to be ualaxial, khexagonal modification of ZnS) and the optical
axis was founi to lie in the plane of the crystal. Using crystals of
various thirV! - tes the author-3 studied thft FO,-;orntion spectra in tho
region of 31000-.510 A (Fig 2). Curves a. J~v to g In Fig 2 represent
spectra obtainvi usine crystals of 1C, 1, 1 aae j.1 u thickness
respectively. The stru(.ture of tne long-w%vo length edge of absorption
Yoe fourA to be clearly exhibited at the liquii-hellum temperature
(4. 20K) , a; shmm in Fig 2. Heating of crystals from 4.2 to 770ii and
then to 200r, di4places the absorption lines towards longer wavelongtht,
and makes tham less distinct. Positions of the absorption lines near the
long-vavalength edge are given in vari ous temperatures in a table on
p I"..
Nis taulo lista three abscrotiva maxima at 4.20K and 770K and
Card 2/3 caly "o Ouch ulaxima at S2950K (200C). All these maxima, lie between

SOV/51-6-1-24/30
Sine-ri Crys-'.~Csof US and the Spectriai of 'rheir Absorption Edge at Low Temperatures
3120 and 1~20 X. Acicn(mladUnenta are ritade to Oal. Matveyoy and
L.V. Maslova for their advice on the matnod of growing of nIz&Ie arystals.
There are 2 figurer. 1 table and 10 references, 6 of which are zioviet,
3 English and 1 German.
SUBMIxTED: J-aly 1~;, 125?
Card 3/3

24(7). 24(b) 4Z()'1/51-6-4-29/29
AU THORS Gross, Ye.F., Novikov, B.V., Ratbirin, B.S. and Suslina, L.G.
TITLE ~,bsor-,*Ion Spectra of Crystals of Certain Gallium Chalcogenides
(Spektry pogloancheniya kristallov nekotorykh khalkogenidov galliya)
?--AIOD1tAL: Optika I, Spekctroskopiya, 1959, Vol b, Hr 4, pp, 569-572 (USSR)
OS'MACT s Linear structure in the long-wavelan&th ad6a of fundamental absorption
ms obsurved in the spectra of some semiconductors jRofs 1-10). -ihese
lines viere ancribed by aom* authors to oxiton states and by others
to exceac of one of the camponeats of the semiconductor or te a foral&n
Impurity. i-no present pa,7,er reports an investigation of the absorption
spectra. of gallittm sulphide and selanide crystals (G&S and GaSe) with
hexagonal laminar stnicture and crystals ofA-Ga2S3 and Ga-)S03. GaS
crystals were obtained by malting together at 1000-10500C stoichiometriz
amounts of gallium and sulphur in evacuatad quartz ampules - Crystal*
of /2-Ga2S3 were prepared similarly L--t tit a higher temperature
(12U0-126003). Preparatiou of G&Sa and Ga23sj (cubic symmetry) wa,3
described by Goryunova at al, (Rof 13). GaS and GaSe wore used in the
form of monocryatals of thicicnesses varying from several microns to ICO
Ga2S3 and Ga2383 were 50-100 IL thick. Structure in the fundamental
absorption edge was observed in the spectra of G&S and GaSe at 770K
Ca rd 1/ 2 (Figs la and 2a re5pactivolyj. Such structure vas also visible in the

Absorption Spectra of Crystals of Certain Gallium Chalcogenides
absorption spectrum of GaSe at room temperature. In contrast to GaS
and GaSe, no structure Yes observed in the fundamental absorption edges
of Ga2S3 and Ga2S*3 either at room temperature or at 770K (Figs 16 and
24). The absence of structure in the absorption spectra of P-GOL03
and Ga2S03 is probably due to a large nwnber of randomly distributed
imperfections In these crystals. Such imperfections impede formation
and migrition of excitons and consequently the exciton lifetime is
very short. Under such conditions the exciton structure of the absorption
bands may be very difruse or it may disappear altogether. From the
absorption spectra the authors deduced the energy ppe In these aemi-
conductors . it table on p 571 lists the values of the energy gaps so
deduced at 2900K (col 2) and 770K (col 3). Those values agree
satisfactorily with those deduced from photoelectric measurements at
room temperature. which are listed in coi 3. Acknowledgments are =ids to
Goryunova for supply of G&Se and Ga2S93 and for advice on
prepar-ttion of GaS aud GaZS3 crystals. There are 2 figures, 1 table
and 17 references , 10 of which are Soviet, 5 French and 2 German.
SUBUITTEDs November 27. 1958
Ca rd 2/2 USCOW,-Dc-.60,717

24(4), 24(b) 60'i/51-e-5-29/34
AUTHORS Bansi-Griyo, M. (Basicie-Grillot), Gross, Ye.F., Griyo, 9.(Grilloti
and RazbIrin, B.S.
TITLE: Studies of Liusar Fluorescence and Absorption of Pure 3admium Sulphide
Crystals at the Temperature of 4.21K (Issledovaniya linsychatoy
fluorestsentsii I pogloshchonlya kristallov chistogo sernistoro
kadmiya pri temperature 4.20K)
4MIODiCAL: Optika i Spektrookoptya, 1959, Vol 6, Kr 5, pp 707-710 (US13R)
ABSTRACTs The present note supplements earlier work (Refs 1, 2, 4) on fluorescence
and absorption of CdS monocrystuls observed at low temoerstures.
The mononrystals were produced by sublimation and their thickness@$ were
##So -0 or lea spectrograph of 4 Vmm dispersion Yes used to obtain
the spectra :; 4A.20X. 'rho fluorescence spectrum of sublimated crystals
is shown 5choutioally by the band A in the figure on p 709. This
spectrum was found to contain one now line (4868.2 1) In addition to
those reported earlier (Ref 2). As before (Refs 1, 2), the fluorescence
was mainly blue with very feeble emission at green wavelengths. rhe
laackground between 4870 and 4942 A and the fluorescence lines were
polarized with the electric vector at right-angles to the optical axis
Card 1/2 of the monocrystal, suggesting a common origin for all of them. The
absorption spectrum of the sublimated arystala is shown by the band B

1 -6-5-29/34
Studies of Linear Fluorescence and ijbsorption of -Ntru ;%dmiu ,rystals at
the Temperature of 4.20K
(the figure on p 709); it did not vary frcri ae:-t.A9 to samplo. Three
absorption lines (4853.1, 4957.2, '1969.1 4) were obsorved in uunolArized
light at positions very close to thr.)e fluorescence lines at 415ti-t;,
4861.4 and 4870.0 1. In the region where contirainui, at-sorptlon -,a*
aomevhat weaker, the li&ht which had vissod throuf-h th,3 :rystal V"as
completely polarized with the elactri: vactor i)rtrallol to the optical
axis of the cryetal. rhe author-', obta;n,.,l ition tho fluorescance spa":trim
of a crystal which ~-as not progired by kt-he rietlind of
preparation is not given). 'rhis spectrun VM3 characttlori%o3d by a st.,-)ng
green band and a line structure in ttio blue ra,-,ion (D in the figuro
on p 709) rhich wis quite different From tri!t observed in sublim,ttud
crystals; neitner the rreen band nor thf; bilio linos --ar~) "larizO.
See also tuo following qbstrhct. There Sre 5 2 of ara
Soviet, I uutch, 1 French and 1 mixed --'i,~-Jish kr-A :Iosslan,.
UEII D - Deeembar 31, 195~1!
Ca rd

'114(4), 24(bi
~Ye. Grip, E. (Grillot), Za4iarchotlya. b.P. rjr;,i
3anai-uriyo, 11. (Baucia-Grillot).
TITLS - The &fract of a Magnetic Field on tni 31%j a -o - -n vi 3
Abscrption Lino of Some Pure Cadmimt 'Julphid-i ~z . .... tp-::; ~t t:,-.)
Temperature of 4.20r: tVliyaniye mainnitnoSo -01.ra 11--, !in-;-,: zin~y
fluorestsentsii i na linli pogloshchani)-i nekntoryk~h :r*,:,vt_*1'r--;
chistogo sornistogo 1cadmiya. pri temnerature 4.20i.)
nl?ICIDT~Al OotiLn I j,m1Ctroskn-,Aya, 19.59, Vol 6, Nr
--Sports continuLtion of the work describud in the 1ricvd- -;,,)r
ksee procedin,w, abstmct). The oresent ior4 .ris
Fhys i~o -Technical InGtitt)te of the .',c. 3c. IUS-R In
monocrystal propared by s-.ibUmation (dimensicivi -1 nvi x C
-was placed betweon vie poles of an electroinarpet. L. dlffr-icti-~,n
Soectrograph with 1.7 X/mm dispersion -as used to rjzord tna I'lxoreonence-
r1lectrum 0i tliq crystAl exctte~ by the 3C.,JP X line tt t.Pc,,. I, a
Mgnotic field of 23 000 Oe, oriented ~t ri-ht-anglas to t1io or(tical
axis of the crystal, the fluorescence linos at. 4~7r, -';;I
exhibited Zeeman oplitting Into doubletz (so-p-iratio'x and
i
let .-.-.)ro
1.2-1.5 1, r3scoctively, cf. Fig 1). -rhe doub
~)olarized in 'the samo vny as the original lines, i.o. -vAth tno 01 3~:tric
-,w:tor at right-ungles to the optical axis of the cry:;T'~!. : 0 :;-litting
-mo ot:- up to ZS 0','(! 0o, orionted to
~ervud in mapetic I'leld

5 0 V1 51 - 6 -5 - 30/3 4
The Efroct of a Magnetic Field on the blue Fluorescence and on the Absorption Lines
of Some Pare Cadmium Sulphide Crystals at the Temperature of 4.20K
the optical axis of the crystal kFig 2). The author studied also
the effect of nagnstic fields on the absorption lines of sublimated
CdS monocrystals. They tound that the 4869.11 is broadened from
1.62 to 2.24 1 by a tiold of 28 000 Oe tdirected at right-angles to the
optical axis of the crystal), irAicating possible Zeeman splitting into
a doublet. Thare are 4 references, 2 of which are French, I Soviet
and 1 mixed (French ano Russian).
SUENITTSDs December 31, 1958
Card 2/2

RUMAIIIA/Opties - spectroscopy. K
Abs Jour : Her Zhur Fizka, No 2) ig6o, 4671
Author : Gross, E.F.
Inst
Title Inportant, Problem of Modern Physics (Excitons in
Crystal Lattice)
Orig Pub An. Rom/-Sov. Ser. mt.-fiz., 1959, 13, No 2, 128-136
Abstract Translated from Vestn. AN BSSR, 1958, No 10p See Referat
Zhur Fizika, 1959, No 4, 9434.
Card 1/1

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GFZSS~ Yo.F.1 KAPLYAN"SKIY, A.A.
4uadrupol~o optical excitation of the ground state of excitons
in copper oxide crystals. Fiz. tver. tels, 2 no.2:379-380 F 160.
(MIRA 14:8)
1. 1Leningradskiy fiziko-takhnicheakiy Institut AN SSSR.
(F.xciton3) Copper oxide crystals)

GROSS, Ye.F.:--SODOLEV, V.V.
Fine structure of the main absorpti3n edFe of cadmium selenide
single crystals. Fiz. tver. tela 2 no-3:40-413 Mar '60.
(MIRA 14:8)
1. Fiziko-tekhnicheskiy Institut AN SSSR, LeninFrad.
(Cadmium selenide--Spectra)

S/181/60/002/007/047/047/XX
P006/BO67
AUTHORS,, Gross~ Te.. F,, Kaplyanskiy, A. A.
TITLE., Splitting of the Fundamental Absorption Edge of Cu20 Due to
the Removal of the Energy Band Degeneracy In Orientated
Deformation of Crystals
PERIODICAL; Fizika tverdogo tela, 1960, Vol 2, No. 7, pp~ 1676-1677
TEXT: The authors studied the effect of deformation on the crystal spectra,
which are related to 1) optical transitions between energy bands and
2) excitation of exciton states. The effect of unlaxial compression of
Cu20 crystals at 770K on their spectra of the long-wave main absorption
edge, the lines A - 6164, 6085, and 6125 A inclusive, was studied. The
CU20 single crystals were compressed in the direction of the C 4v C3' C2
symmetry axes (the direction of compression is indicated by P), and the
absorption spectra were taken perpendicular to P (in the direction Q. The
results are briefly discussed and sh-owa in a figure PIctures were also
taken in polarized light The main characterintics of the splitting
Card 1/;1,

Splitting of the Fundamental Absorption S/16 60/002/007/047/047/XX
Edge of Cu 0 Due to the Removal of the B006YB067
Energ B i
,y an Degeneracy in Orientated
Deformation of Crystals
effect - the multiplicity and the relative amounts of splitting . indicate
that one of the energy bands is single, and the other is triply-degenerate
(in the extreme case at k - 0)~ This experimental result is in agreement
with theoretical investigations (Ref., 11) in which it mas shown. on the
basis of group-theoretical considerations, that the valency band (in
connection with the 2p levels of 02-) is triply-degenerate, and tLat tho
free band (4s levels of Cu) is single There are I figure and 11
references: 7Soviet and 4 US.
ASSOCIAT1W Leningra4skiy fiziko-tekhnicheskiy institut AN SSSR
(Leningrad Institute of Physics and Technology of the
AS USSR)
SUBMITTED, May 17, 1960
Card f'I;L--.

86449
(2 L d/, lo o3 3 7) S/181/60/002/011/038/042
B006/BO60
6 .2 1/.2o
AUTHORS: Gj",Igg"We~&, Razbirin, B. S., and Safarov, V. 1.
TITLEt A Study of the Longwave Edge of Intrinsic Absorption of
Polycrystalline Films of CdS and ZnSe at Low Temperatures
PERIODICALs Fizika tverdogo tela, 1960, Vol. 2, No. 11, pp. 2945-2949
TEM The authors prepared CdS and ZnS films by sublimating the powdery
or crystalline initial substances onto glass or quartz bases; the films
were between 0.04 and 1-2tA thick, the sputtering time ranging between 5
and 30 min. A total of over 100 specimens were examined which were all
subjected to a considerable temperature gradient during sublimation (along
the base the temperature varied from 600-60oOC to room temperature). Fig.1
shows the spectra taken on a 0.42,M thick CdS film at 77.5 0 K in the range
of the longwave absorption edge; while the absorption spectrum of the
film has a smooth course on the "cold" part of base b, that of the film
cn the "warm" base (a) exhibits three distinct peaks at 4878, 4838, and
4706 A which can be assigned to the three lines with 4870, 4840, and
4720 A exhibited by the CdS monocrystal. The shift is ascribed to deforma-
Card 1/3

86449
A Study of the Longwave Edge of Intrinsic S11811601002101110381042
Absorption of Polycrystalline Films of US B006/BO60
and ZnSeat Low Temperatures
tion owing to the backing and tho grent number of defeets, The first two
peaks have a half-width of 10, the third one of 50 A SnSe exhibits the
same effect. The "hot" part exhibits three peak3, two distinct ones at
4430 and 4412 A. and a very weak Ono at U65 A. The half-widths are the
same. One of these maxima has been already observed by G. A. Zholkevich.
An investigation of the films at 4.20K did not give different results.
Electron diffraction studies showed that the difference In the spectra
of "cold" and "hot" films cannot be due to different crystallization forms
or amorphism of the "cold" film. The differences are explained by the fact
that films forming on the "hot" parts of the base consist of considerably
larger and leas defect.ive crystals than those forming on the "cold"
parts. This assumption has been checked experimentally. M. A. Rumsh and
V. N. Shchemelev as well as V. N. Vertsner and M. 1. Rudenok are thanked
for assistance in the experiments; K. V. Shalimova and N. V. Karpenko
are mentioned. There are 3 figures and 7 references: 5 Soviet, I British,
1 French, and 1 Carman,
Card 2/3

86449
A St4dy of the Long-mave EdCe of Intrinsic S/181/60/002/011/035/042
Ab~orption of Polycrystalline Films of CdS B006/BO60'
and ZnSe at Low Temperatures
ASSOCIATION: Fiziko-tekhnichoskly institut An SSSR Leningrad (Institute
of Physics and Technolory of the AS USSR, Leninerad)
SUBMITTEDi July 26, 1960
Card

t

864 5 1
S11811601002101110411042
.2 ~620 BOO6/BO6O
AUTHORSj URI I WIROJAz and Kaplyanskly, A. A- 0
TITLEt Study of the Effect of Oriented Deformationt on the Spectrum
0
of the Fundamental Absorption Edge of*Cu 20 Single Crystals
PERIODICALt Fizika tverdogo tela, '960,pVol. 2, No. 11, pp. 21068-2981
TEXTs This is a very detailed report on studies made on monoaxially
compressed Cu 20 single crystals. As a consequence of this deformation, an
anisotropic polarized splitting of the longwave edge was observed to take
place along with an exciton structure of the Cu 20 absorption spectrum.
Multiplicity, amount of splitting, and polarization in the spectra were
examined with different direntions of compression The method used for the
investigation was simi)ar to the one described in Refs 15,14. The
specimens were about 1~ 2X 4 mm large platelets placed in a special press
inside a Dewar vessel (770K), The spectra were taken in polarized
(EIP, E IP) and unpolari zed I Ight, by an Wn- 51 (ISP- 51 ) spectroscope,
dispersion ~Wmm, and a 4 -65 (UF-85) camera. Tho spectra were all taken
Card 1/8
W

86451
Study of the Effect of Oriented Def(irmations 5118116010002101110411042
on the Spectrum of the Fundamental Absorption Boo6/B06O
Edge of Cu20 Single Crystals
in the direction L which was perpendit-ular to the direction of compression
P (L-IP), with P being oriented along the axes C 4' C3* and C2; Figs' 1-3
show pictures of the polarized splitting or the absorption edge of Cu 2 0~1
The spectra in the figures are described in the text and certain charac-
teristics are pointed out. The magnitude of the splitting is In all cases
(LIP; P 11 C4 fP 11 C 5 0 P 11 C2) directly priportional to the compression
pressure, The polarized splitting was calculated, and the theoretical and
experimental splitting amountaA were intercompared (,6 -v -vo, jjo being the
position of the line in the free crystal). The agreement is satisfactory.
From results obtained it was possible to Infer the character of the energy
levels. The results can be explaineJ by assuming that the triple de-
generacy of the valency band In defcrmation Is removed at 7 . 0. The
final part of the paper under consideration deals with the effect of the
crystal deformation upon the yellow exciton series of Cu 20 (V. T.
Agekyan, a student of LGU (LeningTad State University) participated in
Card 218

86451
Study of the Effect of Oriented Deformations S/!81/60/002/011/041/042
on the Spectrum of the Fundamental Absorption BOo6/Bo6o
Edge of Cu20 Single Crystals
this investigationi, It was found that at PHIC4 the set is sharply shifted
in the direction of longer waves; the ssme, but less markedly, applies to
P11C 3' and at P 11C2a polarization effect appears In addition to this
shift. The uniform shift of the linen allows the conclusion that deforma-
tion has an effect upon the position rf thq band. but not upon the
individual exciton levelsi a relatlc~nship was found, furthermore, to
exist between the hydrogen-like exciton levels with n-!2 and the degenerate
band. A. G. Zhilich is finally th,inkel for discussions en theoretical
problems. There are 7 figures, ? tables, and 29 references2 17 Soviet,
10 US, 1 French, I Japanese, and 1 Italian,
ASSOCIATIONt Fiziko,tekhn1cheskiy Intititut AN SSSR Leninernd (Institute
of Physics and Technolowy of the AS USSR, Leningrad)
SUBMITTED3 August 4, 1960
Card 5/6

86451
S11811601002101110411042
Legends to BW/Bo6o
Fig. It polarized splitting of the absorption edge spectrum of Cu20 on a
crystal compression in the direction of the symmetry axis of 4th order;
Fig. 2: the same on a compression In the direction of the symmetry axis of
3rd orderl Fig. 3A the same for a ,ompression in the direction of the
symmetry axis of 2nd order.
Legend to Fig, 7: spectrogram of thq yellow exciton series of Cu 20 in
monoaxially compressed crystals.
Card 4/8

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86451
s/lBi/60/002/011/041/042
Boo6/BO60
Card 518

86451
S,/161/60/002/011/041/042
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S/181/60/002/011/041/042
B006/BO60
A=4 n=3
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Card '7/6
n=2
7-7
77"

86451
S/181 60/CO2/011/041/042
3060
B006X3
P=O
Pme. 7. C rpaiimid MeATOII ceprom excimme CU20 9 OA"OOC"O-MRTIP"meft"Ux
neompo
RPNCTBAAa%.

68888
"I IA CS-0 0 S/051/60/008/02/015/036
1201KJ3g~
AUTHORS; Gross, Ye.F., Razbirin 8 a ekhmametlyev, R*I*
__7 _i ' actra Ir
TITLE: nvest gati;~~'the Reflection and Luminescence Sp
of Copper Halides at Low Temperature
PERIODICAL: Optika i spektroskopiya, 1960, Vol 8, Nr 2,
pp 232 - 238 (USSR)
ABSTRACT: This paper is based on the results of the diploma work
of B.S. Razbirin and R.I. Shekhmametli,ev,carried out at
Leningradskiy gosudarstvennyy universitet im. Zhdanova
(Leningrad State University im. Zhdanov) in 1955-1957.
The paper reports the results of an investigation of the
diffuse reflection and luminescence spectra of CuI
(Figures 11 2),0CuBr (Figures 3-5) and CuCl (Figure 6)
crystals at 77 K in the spectral region around the
fundamental absorption edges of these three compounds
(some of these results have been reported earlier, cf.
Ref 8). The crystals were used in the form of sublimated
layers deposited in vacuo on glass plates and in the form
of fine-grained powders. Luminescence was excited with
ultraviolet light from a mercury lamp SVDSh-1000:
Cardl/3 e

68888
S/051/6o/ooB/02/015/036
f20
InvestiSation of the Reflection and Lum MORO! Spectra of Copper
fialides at Low Temperature
for CuI and CuBr the 3 660 1 wavelength was used and for
CuCl shorter wavelengths (3 100 - 3 500 1) were employed.
The reflection spectra were obtaineclusing a continuous-
spectrum source (an incandescent lamp). The reflection
and luminescence spectra of the same sample were recorded
by means of a quartz spectrograph Q-12 with 50 I/mm
dispersion in the 4 000 1 region. The results obtained
can be summarized as follows:
1) The reflection and luminescence spectra of copper
halides are similar. The positions of the long-wavelength
absorption edges of CuCl, CuBr and Cul do not differ
greatly. Reflection maxima identical with absorption lines
are obtained for all these crystals in the region of the
absorption edge. The luminescence spectra of the three
crystals have groups of narrow lines, of which those lyinE
at shorter wavelengths coincide with the appropriate
absorption lines. The luminescence spectra cortain also
-Ide bands at longer wavelengths;
Card2/3 2) Adsorbed gases affect strongly the structure of the

68888
S/051/60/008/02/015/036
Investigation of the Reflection and LuminEUPIWEPApectra of Copper
Halides at Low Temperature
luminescence and reflection spectra of CuI and CuBr
crystals. After adsorbed gas is removed the luminescence
and reflection spectra recover their original form (this
process can be repeated many times)#
3) The luminescence spectra of CuI and CuBr contain groups
of equidistant lines similar to those observed in other
Semiconducting crystals (CdS, CdSe, ZnS, ZnO, etc);
4) The results obtained indicate that the short-wavelength
weak luminescence lines of CuI, CuBr and CuCl, which coincide
with absorption lines and are not greatly affected by
surface treatment, are due to processes occurring in the
crystal lattice. The long-wavelertgth strong luminescence
lines, which are very sensitive to surface treatment, are
due to some processes occurring at the surface. There
are 6 figures and 12 references, 6 of which are Soviet,
3 English and 2 French, 1 German.
SUBMIWED: June 3, 1959
Card 3/3

AUTHORS
TITLIs
5/05VO/008/0,1/01,1/032
3201/a-591
Gross, Y*.F., Suslins, L.G. and lomarovnkikh, K.P.
Investigation of the Absorption Spectra)of Zinc Sulphide Crystals
PLUODICALs Optika i speirtroskoplya, 1960, Vol 8, Nr 4, pp 516-520 (USSR)
AM TRACT s The paper deals with polarization of the line structure of the
absorption edge of hexagonal US monocrystals at 4.2 and 770K and
with the absorption spectra of sublimated polycrystalline ZnS films.
Monocrystals of ZAS vere groin in the authors' laboratory by
sublimation of Zid powder in &nsutral atuosphere (Ref 2). To
avoid the of feet of deformations on the absorption spectrtgn, the
monocrystals vors, attached to substrates at one " only, the other
wA rmaining free. The spectra were obtainoo at; 77 and 4.20K in
polarized and natural ultraviolet light using a quartz spoctrograph
q-12 (25 I/mm linear dispersion in the 3200 A region). The line
structure of the absorption edge of US monocrystals was found to be
polarized (Fig 1). At 4.20X the 3205 1 liab vas completely polarized
with its electric vector at right angles to the optical axis of the
crystal (I I a), i.9. it could be represented by a plans absorption
Ca rd 1/3

S/051/60/008/04/014/032
3201/1691
Investigation of the Absorption Spectra of Zinc Sulphide Orystals
oscillator. The 3100 A line was unpolarized or slightly polarized
and the 3115 1 line vae strongly polarized with 1 11 c (the absorption
oscillator close to a linear electric dipole). The nature of
polarization of the spectruis of US monoorystals in similar to
polarization found in other uaiaxi&l crystals with discrete structure
of the absorption edge (Refs 4-6). Thin crystals (d-0.1 -g) were found
to sticit to the base and the consequent deformation produced displace-
ment. of the absorption lines (Table 1). as well as broadening (the
3205 1 line). The absorption spect of Cme, "free" crystals were
also found to be displaced IV 1-2 rdue to internal stresses produced
during growth of the monoorystals or due to diff erences in attachisent
to the bases. The authors investigated also the absorption spectra
(Fig 2) of polycrystalline US films produced by sublimation in vacuo.
At 4.20K the following absorption lines were observed (the width$ are
given in brackets)s 3212 1 (10 1), 3190 1 (10 1). 3128 1 (20 1)- all
these are shown in Fig 2a. In some films a weak line at 32711
(20 1 width) could be soon (Fig 23). The positions of the absorption
lines In polycrystallins, US films at 4.Z and 7701 art listed in Table 2.
card 2/3 Comparison of the data in Tables 1 and 2 shows that the positions and

S/0 51/60/00 8/04/014/0 32
RZ01/1691
Investigation of the Absorption Spectra of Zinc Sulphide Crystals
widths of the absorption lines of polycrystalline films are close
to the positions and widths of ZnS monocrystals stuck to substrate&.
It follows that the films have hexagonal structure. The 3212, 3190 and
3128 1 lines of the W films and the corresponding linee in the spectra
of monocrystals ars the lines of the lsttico Its elf (exciton 6xcit86tio-j)
The 3271 A line of W films is due to lattice defects (for example
excitation of "Impurity" excitons in the defective regions). Thar*
are 2 figures, 2 tables and 9 references, 8 of which are Soviet and
1 Inglish.
SUENITTEDs Aupot 13, 1959
card 3/3

P3927
S/051/60/009/004/030/034
c9u. 1's-14 E201/9191
AUTHORS: Bancie-Grillot, M., Ye.F. Gross, R. Grillot
and Hazoirin,
TITLE: The Effect of Temperature on Two Series of Bands in
the Green Fluorescence Spectrum of Pure Cadmium
Sulphide t Low Temperatures
PERIODICALs Optika i spektroskopiyal 196o, Vol 9, No 4, pp 542-544
TEXT: Very pure cadmium sulphide, which does not luminesce
at room temperature, exhibits intense green fluorescence at the
temperature of liquid air (Refs 1-3). The spectrum consists of
two vibrational series whose maxima are given by
'41 = 19 1+50 - 300n cm-1 and )2 = 19 310 - 300P om" I, where n
and p are small integers. The present paper reports further
studies on the effect of temperature on the relative intensities
of the two series, between 4 and 77 01. In some crystals only the
second series, (V2) was observed at 4 OK; heating of these nrystals
to the boiling point of liquid nitrogen destroyed gradually this
series, which was (also gradually) replaced by the first series at
77 OK. If a crystal exhibited only the first series at 4 oK., then
Card 1/2

H3927
S/051/60/009/004/030/031+
X201/1191
The Effect of Temperature on Two Series of Bands in the Green
Fluorescence Spectrum of Pure Cadmium Sulphide at Low Temperatures
heating to 77 OK did not produce the second series. In crystals
with both series at 1+ OK heating to 77 OK weakened the bands of
the second series so that only the first series (slightly
bA-oadened) remained at 77 'K, as shown in Fig 1. On appli-(~ation
of an electric field (about I kV/cm) to a crystal immersed in
liquid helium and exhibiting both series, the intensity of the
first series bands was raised and the Intensity of the second
series was lowered, as shown In Fig 2. Further studies of the
effects of electric fields are proceeding. Acknowledgement is
made to N.M. Reynov for his help in work with liquid helium,
There ar-j- gures and 1+ references: 1 Dutch, 1 French and
2 mixed (English, German, Dutch, Russian and French).
SUBMITTED: May 3, 1960
Card 212

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80053
The Optical Anisotropy of Cubic Crystals Which Causes S/020/60/132/01/25/064
the Effect of Spatial Dispersion. Quadrupole Exoiton BO14/BO14
Absorption of Light in Cuprous Oxide
lattice, Thin sheets, which were differently oriented relative to the crystallo-
graphic axes, were cut out of this crystal. It was found that the intensity and
the degree of polarization of the lines under consideration are fully determined
by the orientation of the beam relative to the crystallographic axes. The
results obtained are described by means of the speotrogram shown in Fig. I and
the scheme shown in Fig. 2. Herefrom it may be seen that the spatial distribu-
tion of intensity and of the state of polarization has some elements of cubic
symmetry. When taking account of polarization only (neglecting absorption
intensity) it is possible to determine seven "optical" axes along which absorp-
tion is isotropic. The anisotropy of the absorption lines is ascribed by the
authors to electric quadrupole transitions since the observable dependence of
intensity and polarization upon the direction of light inside the crystal
corresponds to the spatial field distribution of an electric quadrupole system.
In discussing the results obtained here the authors refer to papers by
S.I. Pekar et al. (Refs. 12 and 13) in which it was pointed out that optical
anisotropy of cubic crystals associated with the occurrence of excitons is
theoretically possible. Furthermore, a paper by Y.L. Ginzburg (Ref. 14) is
referred to, in which spatial light dispersion was taken into consideration.
Card 2/3

80053
The Optical Anisotropy of Cubic Crystals Which Causes S/020/60/132/01/25/064
the Effect of Spatial Dispersion. Quadrupole Exciton BO14/BO14
Absorption of Light in Cuprous Oxido
The detection of quadrupole transition makes complementary demands on the theory
of the exciton state of the crystal, in which dipole transitions &re forbidden
and quadrupole transitions allowed. In conclusion, reference is made to a
model devised by A.G. Zhilich (Ref. 2) for these tranvitions. The authors
thank M.A. Rums Zz~~~enelev for their assistance in experiments.
There are 2 figures and 14 referenoest 10 of which are Soyiet.
ASSOCIATION: Fiziko-takhnicheskiy institut Akademii nauk SSSR ~Inqtituta of
Physics and Technology of the Academy of Sciences of the USSR)
SUBMITTED:
February 2, 1960
Card 3/3

81 1
3/020/60~113/01/15/070
B014/B011
AUTHORS: Gross. Ye F, Corresponding Member of the AS USSR,
Sobolev. ~-.'v k
Photolumintecenc 'Within the Edge of the Fundamental Absorp-
T ITLE: a
tion of Mixed CdSe - CdS Crystals
1~
PERIODICAL: Doklady Akadomii nauk 333H, 1960, Vol. 133, No. 1,
pp. 56-59
TEXT: In their long introduction the authors discuss the complicated
structure of emission and absorption arising at low temperatures In a
number of crystals (CdS, CdSe, Hg1 , ZnS, and others) within the longwave
absorption edge. In the present paier, the authors study the photo-
luminescence of macrocrystalline Cdge-CdS solid solutions of CdSe single
crystals and of macroorystalline CdSe- and CdS layers within their absorp-
tion edge. The emission and absorption spectra of CdSe single crystals are
analyzed in the first chapter. The great analogy with the spectra of
CdS single crystals is pointed out. The structure is discussed in greater
detail, and, among other things, the great differences existing between
Card 1/3 v

81 17
Photolumineseence Within the Edge of the S/020/60 ~133/01/15/070
Fundamental Absorption of Mixed B014/B011
CdSe - US Crystals
the bonds of different crystals or* described. The second chapter treats
pure macroorystalline CdS- and CdSe layers. Agreement is found between
the emission and absorption lines of the CdS layers and thoss of the Cd$
single crystals. The emission lines of US layers at T - 4~2 X exhibit
triplet structure, whereas the single crystals have a doublet structure.
According to the authors, resul to, the emission of CdSe layers has a
triplet structure. At T - 77.3 K the emission of the CdS layers consists
of structureless bandep the CdS single crystals and pure CdSe layers have
a doublet structure. The third chapter deals with the macSocrystalline
layers of mixed CdSe-CdS crystals. In the case of T a 4.2 K, the photo-
luminescence of all of the 20 samples under consideration has a struct re)
and the line spectrum consists of a few weak lines. On heating to 77.3 K,
the omission intensity drops, the clearness of the structure and the In-
tansity of the ehortwave lines of the edge emission likewise drop sharply,
while the intensities of the shortwave components of the doublet and
triplet structures rise. There are 3 figures and IS references: 8 Soviet,
2 French, 3 German, I British, and 4 American.
Card 2/3

Photoluminescence Within the Edge of the S/020/R/7133/01/15/070
Fundamental Absorption of Mixed BO14/BO11
CdSe - CdS Crystals
ASSOCIATION: Fiziko-tekhnicheekiy institut Akademii nauk SSSR
(Institute of Physics and Technology of the Academy of
Sciences, USSR)
SUBMITTED: March 289 1960
q/
Card 3/3

GRO,&S. Yovi;nn4,;c F, and RUVIKOVY B. V.
"Fine Structure of Spectral Curves for Excitation of PhotoconducttivItX
and Luminescence and its Connection with Exciton Aboorption."
REPCHT TO be submitted for the Intl. Conference on Photuconductivity, 1UPAP,
Cornell University, Ithaca, N. Y.p 21-24 Aug 1961.
Leningrad State Univ.

89299
S11811611003100110411042
B102/B204
AUTHORS: Gross# Ye. F.# Zakharohenya, B. P., and Konstantinov, 0. V.
TITLE: Effoot of the inversion of a magnetic field in the exciton
absorption spectrum of a CdS crystal
PERIODICAL: Fiziks. tverdogo ttla., v. 3, no. 1, 1961, 305-308
TEXT: Studies of the effoot of a magnetic field upon the absorption
spectrum of CdS, on which the authors have made a report in Ref. 1, are
intended to determine the exciton energy spectrum and its relation to the
band structure in CdS. The experiments described here were carried-,out
with 1 - 34 thick foil of dS single crystals, whose optical axis A 4as
i was either parallel or perpendic lar o A.
in the plane of the foils u t
(r is considered to be a vector., because the crystal has no inversion
center). The crystal wer:f oled to 1-30K and remained free from
deformation. In the :ase of 11 T, the exciton absorption lines with
X - 4853, 4813, and 4806 A were weak and so narrow that the effect of the
7-field upon them could be easily observed. The line with A n 4813 A, on
Card 1/4

89299
S/181J61/003/001/041/042
Effect of the inversion of a magnetic ... B102/B204
which the inversion a foo could be beat observedg had a satellite line
with X - 4814 As At YL k the 4613-line split up into a doublet, whose
center of mass was shifted toward higher energies relative to the
original line. The weak 4814-lins, whose origin is not quite clear# is
also split up into a doubletj the components are weak and not so far
apart as those of the main line. In the case of inversion of the field
direction, the manner of splitting is considerably changed (shift of the
main doublet AX - 0~4 Al intensity change). The essential change in the
SDectrum occurring when the field direction is inverted, consists in a
shift of the Zeeman components and in a change of their intensityl the
same effect is attained if the field is left an it is, and the crystal is
rotated through 1800, Also the line with 4853 A, which is not split in
the field, shows no effect of inversion. The line with 4806 A shows a
complex splitting, and the inversion effect may be observed only with
difficulty. The change of the absorption spectrum cannot be explained
within the framework of the spectroscopy of an isolated atom, above all,
because the effect in in contradiction to the invarianos of the
SchrOdinger equation with respect to time reversal. The question is now
Card 2/4

89299
311811611003100110411042
Effect of the inversion of a magnetic... B102/B204
examined as to what possibilities are left by the invariance of the
quantum-mechanical equations with respect to the time reversal for
excitons in the crystal. The invariance is formulated b eans of the
Onsager principle for the conduction tensort a 11V (7,(J"X M. 011V (_2jWO1r)4
Then the power absorbed per cm3 with a given A and I/H
E E Red (1,(J,;) and W(-I) - -12:E E Rea Herefrom,
W('H) .1 ~ 0 2
i A go
the change in the absorption spectrum in the case of inversion of H may be
observed. In the presence of an inversion center In the absorbing medium,
the effect would not be observable. The shift of the Zeeman components in
the case of field inversion may be due to the following effect: The
excitons excited by the electromagnetic wave move translatorily with
.1t7/p (p - effective exciton mass) and, in the presence of a constant
n.agnetic field, they generate the field fLCk9,9j/'Fg. In a o stal
nithout inversion center, the exciton state has a dipo_je moment F and
to the energy of the exciton in the magnetic field, is added
additivelyo I is parallel to T, and the energy determining the shift
Card 3/4

89299
S/181/61/003/001/041/042
Effect of the inversion of a magnetic ... B102/B204
equals AF, - (Z,rk,1j). If any of these vectors are parallel, &F_ - 0 -
and thus no effect may be observed, e.g., with Z 119. There are 1 figure
and 6 references: 3 Soviet-bloc and 3 non-Soviet-bloc.
ASSOCIATION: Fiziko-tekhnicheskiy institut AN SSSR imeni akad. A. F.
Ioffe Leningrad (Institute of Physics and Technology of the
AS USSR imeni Academician A. F. Ioffe, Leningrad)
SUB"JITTED: August 24, 1960
Card 4/4

GROSS, Ye.F.; SHUMAMETIM, R.I,
Connection between edge luminescence and the structure of the basic
absorption edge. Fiz. tver. tela 3 no. 3:889-894 Mr 161.
(MIRA 14:5)
1. Leningradskiy gosudarstvennyy universitet imeni A.A. Zhdanova.
(Absorption of light) (Luminescence)

GROSS, Ye.F.; ZAKHARCIIENYA, B.P.; KANSYAYA, L.M.
Investigating the Stark effect of excitons in oriented single
crystals of cuprous oxide. Fiz. tver. tela 3 no. 3:972-978
mr 61. WIRA 14:5)
1. Fiziko-tekhnicheskiy institut All SSSR, Leningrad.
(Stark effect) (Copper oxide--J'pectra)

2V
S/101/61/003/00-1/025/W
B102/B209
/t
AUTHORS: Gj:~), Ye. F. and Novikov, B. V.
1- . - - 1. - 11---
TITLE: The relation between bavk~;round and the ,ine-structure
maxima of the spectral curves of photoconductivIt.- in CdS
single crystals
PERIODICAL: Fisika tverdo&ro tela, v. 3, no. 4, 1961, 1249-1252
TEXT: In previous papers (ZhTF, vYp. 4, 913, 1956 and DAIT SSSR, 110, no- 5,
761, 1956), the authors reported on the discovers of a compley structure of
the spectral photocurrent distribution at T - 77 K in the rai.ge of the known
exciton absorption lines,. These distribution curve- may be divide! into
two classes: The first class contains those in which the exciton absorption
lines coincide with the photocurrent maximum, while the second class enco-a-
passes such in which the exciton absorption lines coincide with the photo-
current minima. According to this classification, the crystals differ
essentially in the character of the short-wave Jrop of photoconiuctivity.
In a later paper, the effect of defects and surface conditi~~n of CIS crystals
upon absorption lines and photocurrent curves was atudied. These studies
Card 1/4

2
S/18i 61W3/004/025/030
The relation B102YBB209
have now been continued. Both classes of US crystals have a structureless
background. Fig. I shows that the relative values of maxima and background
differ greatly in different specimens. In the curvesdbnoted by a, E was
perpendicular to C (E - electric vector of the excitin6 light, C - optic-tl
axis of the crystal), whereas in those indicated by b, E was parallel to C.
Like M. S. Brodin, the authors found that the background is considerably
polarized in the direction of the electric vector EIC. The structure of the
photoconduction curves vanishes in many cases if the surface of the crystal
is subjected to a slight treatment. In this manner, curve a in Fic. 2 was
obtained from a3 (Fic. 1) by wiping the surface of the crystal with wet cot--'
ton. The sensitivity of the specimen decreased. The structure of the curve
after polishing had such a shape that the crystal had to be assigned to the
second class. The authors also determined the spectral distribution curves
of polycrystalline CdS films sputtered upon glass hackings. In such films
which exhibited a structured absorption edge, also a structure of the photo-
conduction curves was foutid. The backgruund was very high inthis case, and
the fraction of radiation used to determine the structure accounted only for
some per cent. These facto speak in favor of an interrelation between the
photoactive background (or part of it) and the IaV.ice imperfections. Films
Card 2/4

The relation
I. j P' I
5/181/61/00/004/025/0510
B!02/B209
having no structure of the absorption edge had completely smooth photocur-
rent curves at 770K. V. L. Broude, V. V. Yeremenko, V. S. Medvedev, M. K.
Sheynkmant N. N. Chikovanit and M. S. Brodin are mentioned. There are
2 figures and 10 references: 7 Soviet-bloc and 3 non-Soviet-bloc. The
two references to English-language publications read as followB: D. Dutton,
Phys. Rev. 112., 785, 1958; D. G. Thomas, J. J. Hopfield, Phys. Rev. 116,
573, 1959.
ASSOCIATION: Leningradskiy gosudarstvennyy universitet im. A. A. Zhdanova
Fizicheskiy institut (Leningrad State University imeni
A. A. Zhdanov, Institute of Physics)
SUBMITTED: September 26, 1960
Card 3/4

GMI YO,Foj MILICH A.G.; ZAKHAIVIENYA, D.P.; VARFALOMMEV, A.V.
P
Hapeto-optical. studios of quadrupole excit~n tr-n-itions in Cu20
crystalso Fix.tyer.tela 3 no#51U45-1452 Vq 161. WRA 14M
1. Fiziko-tekhnicheskiy iAntitut Amni A,F.Ioffe AN SSSR, ieningrad. ~
(txoitons) (Cuprous oxide-Mgnetic properties) (Cr7stal latticex~-

.~4:-~700 Oro

ne
r;,.Tf, t

t, 1, f, r 1 0

re ;,j r. -i

24933 S/181/61/003/006/030/031
Effect of recoil of momentum and... B102/B214
f-~E . On account of the dependence of M* on the direction of propaga-
e X f" exo
tion of light, the exciton recoil effect should also depend on the angle,
and in anisotrople crystals on the direction of polarization of light.
The effect should be experimentally observable in exciton spectra, e.g.
from a determination of vabs -Ivemiss* Such a line displacement of
"10-4 ev has in f ac t been observed in luminescence spen t ra (HgJ2, CdS)
However, it is not yet granted that this displacement has no other
crJgin. There are 6 references: 3 Soviet-blcc and 3 non-Soviet-bloc.
ASSOCIATION: Leningradskiy gosudarstvennyy universitet lm. A. A. Zhdanova
(Leningrad State University imeni A. A. Zhdanov)
SUBMITTED: February 23, 1961
Card 3/3

296F)
B/18ijbi/003/010/019/036
Of 7, 11,6pj / q re B104/B108
AUTHORSi Gross, Ye. F~~, Zakharchenya, B. P., and Razbirin, B. S.
TITLEs Magneto-optical effects in the absorption spectrum of a
oadmium-sulfide crystal
PERIODICALs Fizika tverdogo tela, v. 3, no. !0, '961, 3083 - 3091
TEXT: The Zeeman displacement of the two roups of absRrption line 0
cadmium-sulfide crystals was investigated f4889 - 4660 Xi 4860 - 46860
Experiments were made 0in magnetic fields of up to 35,000 0e at tempera-
tur*s of 4.2 and 1.3 K. The long-wave group was Investigated with the
aid of thin crystals (from~014 up to some tons of microns) Tj~=
di;pjrsion of the diffraotion-grating spectrograph used wa; 4 and
1. /mm. Line splitting was found to depend on the polarization and on
the direction of the magnetic field. A diamagnetic line shift was
observed which is increasing with the magnetic field strength and with the
quantum number (in the case of the hydrogen-like lines). The Zeeman
splitting of the weak lines between 4889 and 4854 was not uniform for
all lines studied. In a disoussion of these results the authors show that
Card 1/3

2?6
S/181 6?~003/010/019/036
Magneto-optical effects in the ... B1047B!108
an electric field sots on the exciton levels in a magnetic field.
A. G. Samoylovioh and L. A. Korenblit (DAN SSSRj 100, 43o 1955) studied
the action of a Lorentz field on an exciton moving in a magnetic field.
The results obtained here are explained as followst The excitons of a CdS
crystal have a dipole moment caused by the asymmetry of the intra-
crystj,lline field. The axigof this dipole is directed along the optical
axis A of the crystal* If AjjHj the electriq Lorentz field is
perpendicular to the dipole axis, and if Aff, it is parallel to the dipole
axis. In the first oasel the Stark effect obviously reaches a minimum.
In the second case, a Stark effect Is observed on exciton levels of
greattr radii. The discovered diamagnetic shift of absorption lines con-
firms the existence of exoiton series which are related to the complex
band structure in a CdS crystal. The Zeeman effect proves the complex
energy structure of an exo1ton in a CdS crystal. The appearance of a
Lorentz field in magneto-optical exciton effects indicates the existence
of a movable exciton system. There are 3 figures, 2 tables, and
12 referencest 8 Soviet and 4 non-Soviet. The three most recent refer-
ences to English-language publications read an followst E. F. Gross,
J. Phys. Chem. Sol., tj 172j 19591 J. J. Jopfield and J. G. Thomas, Phys.
Card 2/3

693
S7181761/003/010/019/036
Magneto-optical effects in the ... B100108
Rev. Sit., Is 7, 19601 R. G. Wuler and J. 0. Dimmok, Phys. Rev. Sit.,
372p 1959-
ASSOCIATIONt Fiziko-tekhnioheskiy institu-. im. A. F. Ioffe AN SSSR
Leningrad (Physicotechnical Institute imeni A. F. Ioffe,
AS USSR, Leningrad)
SUBMITTED: May 17t 1961
Card 3/3

29699 S/ I a V611003101010281036
-?443-50'0 (1132,1130 B125/BI02
AUTHORSs Gross, Te. P., and Shokhmametlyev, R. I.
TITLEt Complex structure of excitation spectra of luminescence of
HgI2 and PbI 2 crystals
PERIODICALs Pizika tv*rdogo tela, Y. 3, no. 10, 1961, 3162 - 3166
TEXTe The authors determined the exoitation curves for luminescence of
Hg12 crystals and of sublimed Pb12 layers at T - 770K. According to
V. A. Arkhangel'skaya and P. P. Peofilov (DAN SSSR, 108, 803, 1956; opt.
i spektr., II, vyp. 1, 1957), the intensity of each luminescence band of
an Hg12 crystal is in different ways a function of the intensity of the
light source. The first seriesof Hg12 crystals has been grown in the
authors' laboratory by K. F. Lider who empyed slow crystallization from
a solution of HgI 2 in acetone. A second series of specimens was grown
from the gaseous phase. Fig. I shows the luminescence intensity of Hg12
crystals an a function of the exciting wavelength at T - 770K. No
Card 1

2911)18Y61/003/010/028/036
S
Complex structure of ... B125 B102
absorption lines correspond to the apparent peaks at 5360 and 5280
(t 20 - 30 R) found on the excitation curve 2. The structure of the ex-
citation curve for red luminescence of the same HgI 2 crystals was found to
be hardly influenced by surface treatment. The various luminescence bands
correspond to various crystal centers. The yellow-green and the red
luminescence are closely related to the exciton absorption lines. Fig, 2
shows the eicitation curves for red luminescence of an HgI 2 single crystal
at T - 770K. For excitation with VIC the peak at 5330 1 does not appear
on the excitation curve. For ELC the peaks at 5330 and 4932 f will occur.
The latter is due to incomplete polarize,tion of the absorption line
%- 4932 f. The authors also investigated the excitation spectrum of the
low-temperature luminescence of various PbI 2 crystals. The specimens were
sublimated at #AOOOC upon a glass backing. The spectral lines found are
curved, deformed,and are shifted relative to the absorption line )Lm 49481
of PbI2 single crystals toward the short-wave region of the spectrum. The
Card 20~

296n
81 181/61/003/010/028/036
Complex structure of ... B125/B102
results of this paper point to a close connection between broad lumines-
oence bands of HgI 2 and Pb12 crystals and the structure of the self-
absorption edge. The maxima and minims of the luminescence excitation
curves could correspond to lines with ezoiton structure. The authors'
experiments have shown that excitons play an essential part in the
luminescence excitation of crystal centers and defects. There are 3 fig-
uros and 8 ref*ronoess 6 Soviet and 2 non-Soviet. The reference to the
English-languago publioationa reads as followai S. Nikitine et G. Peray.
C. R., 240, 64, 19551 S. Nikitine. Phil. Hag., A., 1, 1959.
ASSOCIATIONo Loningradskiy goeudaretyennyy univeraitet is. A. A. Zhdanova
(Leningrad State University imeni A. A. Zhdanov)
SUBMITTEDs June 2, 1961
Card 3

GRIYOP E. (Grillot, E,],,- GRWS Ye F - BA11SI-GRIYO, M. [Banc ie-Grillo t, 14.];
NOVIKOVO DIV. 0
Mkiltiformity of spectral photosensitivity curves of pure CdS
crystals. Fiz,tver.tela 3 no.3-133519-3521 N 161. (NIRL 14:10)
1. Fiziko-tekhnicheakiy institut im. A.F.Ioffe AN SSSR, Leningrad.
(Photoconductivity) (Cadmium sulfide-Spectra)

S/18 6'./003/011/051/C56
B1 04YB1 38
AUTHORS: Gross, Ye. F. , Kalyuzhr)a:/f-. '- K., and Nedzvetskly, D. S.
TITLE. Complex structure of the al.zv-.rption spectrum of mono-
crystalline gallium phcs...'-Idiao
PERIODICAL: Fizika tverdogo tela, v. _51, no. 11, 1961, 3543-3545
TEXT: Single crystals of GaP were inv,;st!t:ated at nitrogen temperature.
Single crystals 4 to 5 mm long, 0.3 mn, t, a few microns thick were obtained
f rc,-.; tuht! melts by crystal 11 zati on (G. Wol f f e t al . , Bul 1. Am. Phys. Soc - ,
22, 1, 1954). In transmittel light thl',~ -r-ystals appeared orange and thick
ones yellow-green. The absorption sr-,-ra were taken with arACT-67
(IS?-67) spectrograph with a campra cf -,00 mr. focal length. In the region
studied the die,-ersion was 10.5 I/mm. The absorption edge of a GaP single
crystal is shown in Fig. 1. This sper:t-.ir. was taken for specimens that had
been cooled slowly. Rapidly cocled al;!!1mans had only one broad line
(5363.2 ) which is shifted into the lion.-, wave range by a few angstroms.
The lines can be grouped in pairs: ar. intense narrow and a wellk narrow
line, a weak and a strong broad line, anA two broad lines. The distance
Card 1/
X~_

30804
S/.'a 61/003/011/051/056
Complex structure of the absorption ... BI G4YB1 36
between the lines in each pair is 130 cz- within *he limits of error. It
is concluded from this structure that t-~ valence band of the crystal
consists of three bands from each of 'he electrons make transitions
to two discrete levels below the bottom .~f the conduction band, under the
action of light. A possible energy level scheme is shown in Fig. 2.
There are 2 figures, 1 table, and 7 ref"rences: 2 Soviet and 5 non-Soviet.
The three most recent references to Enelish-language publications read as
follows; E. 0. Kane. J. Phys. Chem. Solids, 1, 249, 1957; F. Stern, R. M.
Talley. Phys - Rev. , 108, 158, 1957; R - Braunstein. J. Phys. Chem. Solids,
.t, 280, 1959-
ASSOCIATION: Leningradskly gosudarstv~nryy universitet im. A. A. Zhdanova
(Leningrad State University ineni A. A. Zhianov)
SUBMINTED: July 15, 1961
..e ~
Card 2/4/..--