Document Sample

Proceedings of the Second International Conference on FHONON PHYSICS August 26-31, 1985, Budapest Hungary Editors: J Kolldr NKroo N Menyhard T Siklos World Scientific ix CONTENTS Preface vii PHONONS IN AMORPHOUS MATERIALS M. CARDONA — Vibrational spectra of a-Si 2 R.J. ELLIOTT —Vibrations in amorphous materials and at interfaces ; 15 H.M. ROSENBERG — Phonons and fractons - a n experimental study ... 26 U. BUCHENAU — Low-frequency vibrations in amorphous materials 30 G. WEISS — Low temperature acoustic properties of amorphous solids at audiofrequencies 35 R. VACHER, J. PELOUS and E. COURTENS - Light scattering observations of low-frequency vibrations in disordered systems 40 V. ESTEVES, A. VANELSTRAETE and C. LAERMANS -Further study of the "glassy" behaviour of neutron irradiated quartz .... 45 H.v. LOHNEYSEN, E. RATAI and W. SANDER. - Tunneling states in vitreous silica: effect of structural relaxation 48 M. GULACSI and Zs. GULACSI - Phonon mediated spin-glass behavior in ZnCr, ,Gan .0. 51 1.6 0.4 4 A.M. de GOER and B. SALCE — Low temperature glass-like behaviour of neutron irradiated Ni-doped AI2O3 crystal .... 54 Y. DAGORN, R. VACHER, E. COURTENS and F. HUARD - Acoustic- phonon observations of freezing dynamics in a structural glass 57 A.G. ZHILICH, A.A. KISELEV and V.P. SMIRNOV -Phonons in orientationally disordered crystals 60 W. BURCKHARDT, P. BUSSEMER and U. DIETRICH -Structural peculiarities in the optical properties of some chalcogenode glasses 63 M. WAGNER — Low temperature Fano limit of the phonon assisted quantum diffusion problem 66 M. DEVAUD and J.-Y. PRIEUR —Observation of ultrasonic free induction decay in a borate glass at low temperatures 69 A. RICHTER and W. POMPE - Qualitative features of Raman spectra in amorphous carbon films 73 A. LOIDL and K. KNORR —Excitations in orientationally disordered crystals 77 F. GOMPF, G. FASOL, W. HONLE and J.B. SUCK - T h e phonon density of states of Hittorf'I phosphorus in compa- rison to those of the black orthorhombic and the red amorphous modifications: an inelastic neutron scattering investigation 82 Yu.M. GALPERIN, V.L. GUREVICH and D.A. PARSHIN -Nonlinear relaxational ultrasonic absorption in metallic glasses 86 H.W. GRONERT and D.M. HERLACH -Phonon scattering by low energy excitations and free valume in amorphous PdCuSi .... 89 J.D. COMINS, E.F. LAMBSON, W.A. LAMBSON, J.E. MACDONALD, G.A. SAUNDERS and B. BRIDGE - T h e elastic behaviour and vibrational anharmonicity of molybdenum phosphate glasses 93 K. VLADAR — Ultrasound scattering on two-level systems in metallic glasses 96 K. VLADAR and G.T. ZIMANYI -Electron-localisation effects on impurity dynamics 100 K. VLADAR, A. ZAWADOWSKI and G.T. ZIMANYI -Theory of a tunneling atom interacting with a degenerate electron gas 103 S. PIEKARSKI —Quantum mechanical description of a linear elastic continuum with random properties 108 T. SCHRADER, A. LOIDL, K. KNORR and J.K. KJEMS -Neutron scattering studies in the molecular glass (NaCN) l x (KCN) x Ill CALCULATION OF PHONONS K.H. MICHEL — Phonons and orientational disorder in molecular crystals 116 G.S. PAWLEY — T h e computer simulation of phase transitions 124 R.M. LYNDEN-BELL - Computation of phonons by molecular dynamics in orientationally disordered phases 132 K. KUNC — T h e 'direct' methods in the ab initio theory of phonons 137 J.T. DEVREESE, P.E. VAN CAMP and V.E. VAN DOREN - Ab-initio phonon frequencies of covalent semiconductors 142 G.A. TOOMBS and F.W. SHEARD — T h e phonon dispersion relation for an insulating solid with an inhomogeneous distribution of paramagnetic ions 147 Z.K. PETRU — Anisotropy of isotope-scattering rate in crystals of hexagonal symmetry 150 xi Ph. BUCHET and R.M. PICK -Analysis of a M.D. computation of a rotator phase * 153 C. PATEL, W.F. SHERMAN and G.R. WILKINSON -Lattice dynamics of cuprous bromide 156 C. PATEL, W.F. SHERMAN and G.R. WILKINSON - Reinvestigation of lattice dynamics of diamond on the basis of extended versions of Born-von Karman model 159 V. FREI — A generalized lattice-dynamical frequency sum rule and beyond . . 162 E.R. COWLEY, G.K. HORTON and J.G. LE"ESE -Phonons in rare gas solids at high temperatures 165 S. HAJAIG and M.A. BALL — Derivation of appropriate force- constants from experimental data 168 K.R. RAO, S.L. CHAPLOT, N. CHOUDHURY and S. GHOSE - Lattice dynamics of forsterite, Mg2SiO4 171 K.R. RAO and S.L. CHAPLOT — Lattice dynamics of complex ionic crystals 175 A.N. LAZAREV, A.P. MIRGORODSKY and M.B. SMIRNOV - Vibrational spectra and dynamical properties of ionic-covalent crystals 179 I.J. LALOV —Model for phonon dispersion in anisotropic crystals 182 ELECTRON-PHONON INTERACTION A.Yu. RUMIANTSEV —Singularities in phonon spectra in metals .... 188 N.V. ZAVARITSKY — Electron-phonon interaction in 2D 196 E. SIGMUND and J. MAIER — Phonon scattering at Jahn-Teller defects in semiconductors 201 R. RIGHINI — Lattice dynamics and anharmonic properties of molecular crystals 206 N.V. ZAVARITSKY - T h e phonon drag of electrons in metals 211 P.R. SURJAN, H. KUZMANY and K. IWAHANA -Role of electron- phonon interaction in polyacetylene 214 A.N. KOCHARYAN —Effect of the electron-phonon interaction on the electron spectrum of the weakly disordered semiconductor 217 , C.-C. WU — Influence of velocity operator on longitudinal magnetoacoustic phenomena in n-InSb 221 S.V. MESHKOV — Quasiclassical theory of multiphonon radiation- less transitions 224 xii H. ESCHRIG, R. RICHTER, L. WEIB, A.Yu. RUMYANTSEV, N.L. MITROFANOV, A.S. IVANOV and N.A. CHERNOP^EKOV - Phonon anomalies in copper-base alloys 227 C. WEBER, E. SIGMUND and M. WAGNER - A new Jahn-Teller phenomenon: dynamical valency-mixing in the system SmB 6 :Er 3+ 230 V. ZELEZNY, S. PACESOVA, J. PETZELT, V.V. KAMINSKII and I.A. SMIRNOV — F a r infrared reflectivity spectra of SmS ... 233 B.Z. MALKIN, K.L. AMINOV, A.K. KUPCHIKOV, V.R. PEKUROVSKII and A.I. RYSKIN — Electron-phonon excitations in rare- earth crystals with zircon and scheelite structure 236 Yu.S. PONOSOV, G.A. BOLOTIN -Anomalous damping of the E 2 optical phonon in transition metals ? 239 M.A. LEBJODKIN, S.N. ZORIN and V.S. BOBROV -Electron-phonon effects at a low-temperature twinning of niobium 242 R. BESERMAN, K.P. JAIN, M.V. KLEIN and H. MORKOC -Electron- phonon coupling in mixed Ga x Al^ x As crystal 245 INCOMMENSURATE AND STRUCTURAL PHASE TRANSITIONS R. CURRAT —Neutron scattering studies of phase and amplitude modes 250 T. JANSSEN — From incommensurate to quasi-crystals 260 M. VALLADE — Low frequency phonon modes and the incommensurate phase of quartz 266 R. MIGONI, H. BILZ, A. BUSSMANN-HOLDER and W. KRESS - Temperature dependence of ferroelectric soft modes 272 P. ECHEGUT, M.A. PIMENTA and F. GERVAIS -Hard modes in infrared response of ^SeO^-type incommensurate systems 275 Y. LUSPIN, G. HAURET and P. ECHEGUT -Acoustic phonons investigation in NH^LiSO^ by Brillouin scattering 278 P. SIMON, F. GERVAIS and P. ECHEGUT -Soft mode behavior induced by proton disorder in KDP-type compounds 281 G.M. MAZZUCHELLI and R. ZEYHER -Static and dynamic properties of the intrinsically pinned phase of the Frenkel- Kontorova model at finite temperatures 284 W. DULTZ — On the phase diagram of the alkali cyanides 287 J.C. TOLEDANO, J. SCHNECK, G. ERRANDON^A, R. CURRAT and D. PETITGRAND —Neutron scattering and X-ray investi- gations of barium sodium niobate in the range of the quasi-commensurate phase 290 N. WRUK, H. FUTTERER, H. BACH, J. PELZL, K.-H. HO'CK and G.A. SAUNDERS —Acoustic anomalies near the structural transformation in La^S^ 293 xiii OE A O E. MEIMARAKIS and P. T L D N — Renormalization-group study of s t r u c t u r a l and magnetic t r a n s i t i o n s associated with a six-component order-parameter 296 U S A NH L E A. B S M N - O D R and H. BILZ - T h e phase t r a n s i t i o n mechanism of hydrogen bonded f e r r o e l e c t r i c s 299 TAC D. S R U H and R. BECHER - T h e f e r r o e l e c t r i c phase t r a n s i t i o n in SnTe 302 F. PROKERT and S.V. MISYUL - Anticrossing of dispersion branches and exchange of eigenvectors in the elpasolite type crystal Cs2NaBiCl6 ,. 305 A.V. BELUSHKIN, I. NATKANIEC, N.M. PLAKIDA, L.A. SHUVALOV and J. WASICKI —Structural phase transitions in superionic conductors CsHSO. and CsHSeO^ 308 P. TOLEDANO and M. CLIN -Theory of the magnetostructural phase transition in U0_ 312 D. PETITGRAND —Soft phonon and phase transition in RbFeBr, 315 J.J.L. HORIKX, M.A.M. de JONG, J.I. DIJKHUIS, A.F.M. ARTS and H.W. de WIJN — Brillouin spectroscopy of Rb2ZnBr4 and Rb2ZnCl4 318 N.N. BOGOLUBOV, Jr\, and V.N. PLECHKO -Higher orders of the perturbation theory for a polaron model at finite temperature 321 W. BUHRER, W. BRIXEL and H. SCHMID - Soft mode and structural phase transitions in the Perovskite Pb2CoWOg 325 N. WRUK, J. PELZL, K.-H. HOCK and G.A. SAUNDERS -High temperature elastic anomalies in A^BXg compounds due to coupling to the optical soft mode 328 C. AYACHE, M.D. NUNEZ-REGUEIRO, J.M. LOPEZ-CASTILLO - Thermal conductivity and charge-density-waves in dichalcogenides .. 331 PHONONS IN DISORDERED SYSTEMS AND INTERCALATED LATTICES H. ZABEL — Phonons in intercalated graphite 336 P. BRUESCH — Phonons in superionic conductors 341 S.A. SOLIN —Phonons in ternary intercalated layered solids 349 PHONONS IN NORMAL LIQUIDS AND MELTING S.R. NAGEL, G.S. GREST and A. RAHMAN —Simulation spectroscopy of phonons in glasses 354 A. SJOLANDER — Theory of liquid-glass transition 364 U. DAHLBORG, W. GUDOWSKI and K.E. LARSSON - Atomic motions in liquid metals by neutron inelastic scattering 372 XIV L.A. de GRAAF, A.A. van WELL, P. VERKERK and I.M. de SCHEPPER — Sound modes in liquid argon and neon 378 S.W. LOVESEY - Collective motions in dense fluids observed in neutron scattering 383 PHONONS IN MIXED VALENCE COMPOUNDS P. FULDE - Interactions of phonons with 4f-electrons 390 C. STASSIS -Phonon dynamics of d- and f-electron systems 401 B. GOLDING, B. BATLOGG, D.J. BISHOP," W.H. HAEMMERLE, Z. FISK, J.L. SMITH and H.R. OTT -Sound propagation in heavy fermion superconductors 406 B. Ll)THI — Electron-phonon interaction in f-electron systems .... 411 E. ZIRNGIEBL, S. BLUMENRODER, R. MOCK and G. G0NTHERODT - Relation of phonon anomalies to charge fluctuation rates in intermediate valence compounds 413 NONEQUILIBRIUM PHONONS Y. LEVINSON — Phonon propagation with frequency down- conversion 418 R.S. MELTZER and R.M. MACFARLANE -Optical dephasing by nonequilibrium phonons in LaF, 425 W.E. BRON — Nonequilibrium phonon transport phenomena 430 F.W. SHEARD, G.A. TOOMBS and S.R. WILLIAMS -Temperature and phonon distribution profiles for thermal transport through interfaces 435 A.F'.G. WYATT and M. BROWN — A model calculation of the quantum evaporation of ^He 440 A.S. ALEKSEEV, M.M. BONCH-OSMOLOVSKII, T.I. GALKINA - Non- equilibrium acoustic phonons in thin silicon layers 445 A.V. AKIMOV and A.A. KAPLYANSKII -Nonequilibrium phonons and exciton-phonon luminescence in cuprous oxide crystals 449 J. JANSZKY, A. MECSEKI and A.V. VINOGRADOV - Influence of non-equilibrium phonons on hot luminescence 452 I. SILDOS, G. ZAVT and I. DOLINDO —Propagation of nonequili- brium phonons subjected to a resonance scattering by impurity molecules 455 N. RETZER, H. LENGFELLNER and K.F. RENK - Trapping time of phonons in strongly optically excited ruby 458 U. HAPPEK, T. HOLSTEIN and K.F. RENK - Spectral-spatial diffusion of phonons in ruby 461 XV D.V. KAZAKOVTSEV and Y.B. LEVINSON -Film injectors of high energy phonons at different regimes of phonon propagation in crystals 464 NONLINEAR PHENOMENA N. THEODORAKOPOULOS - Solitons: dynamics, statistics and the Bethe Ansatz 468 E. MAGYARI — Linear excitations of anharmonic crystals in the presence of domain walls 478 H. BUTTNER — Thermal conductivity in one-dimensional classical lattices 483 R. SCHILLING - Glassy structures as spatial chaos 488 B.K. RHEE and W.E. BRON - Decay of coherent LO phonons in GaP 493 N. FLYTZANIS, St. PNEVMATIKOS and M. PEYRARD -Emission of lattice waves due to discreteness of high energy solitons 496 P. MOBIUS — Solitary excitations and their superposition 499 S.A. VITKALOV, V.F. GANTMAKHER and G.I. LEVIEV -Nonlinear acoustoelectronic effects under the conditions of supersonic drift of carriers in bismuth 502 PHONONS IN SUPERLATTICES AND QUANTUM WELLS J.M. WORLOCK - Phonons in superlattices 506 B. JUSSERAND, D. PAQUET, F. ALEXANDRE, M.N. CHARASSE and A. REGRENY — Optical phonons in superlattices 521 J. SAPRIEL, J.C. MICHEL, J. CHAVIGNON, R. VACHER, A. LANGFORD and F. ALEXANDRE - N e w trends in the study of vibrational modes in superlattices 526 S.R.P. SMITH —Theoretical modelling of phonons in superlattices 531 J.E. ZUCKER, A. PINCZUK, D.S. CHEMLA and A. GOSSARD - Exciton- optical phonon interactions in GaAs quantum wells 536 R. MERLIN, K. BAJEMA, R. CLARKE, F.-Y. JUANG and P.K. BHATTACHARYA - Fibonacci GaAs-AlAs superlattices 541 C. COLVARD, M.V. KLEIN, R. FISCHER and H. MORKOg -Experimental observations of folded acoustic phonons 546 R. BESERMAN, V. GRIDIN, M.V. KLEIN and H. MORKOS -Electron- phonon coupling in superlattices 548 E. VASS —Acoustic phonon limited electron heating in n-inversion layers 551 XVI B. DJAFARI-ROUHANI, J. SAPRIEL, A. NOUGAOUI and L. DOBRZYNSKI —Elastic and photoelastic properties of superlattices of thin alternating layers 555 J.O.A. IDIODI, B. DJAFARI-ROUHANI, L. DOBRZYNSKI, R. FOURET, J. SAPRIEL and F. BONOUVRIER -Simple molecular crystal models of surface, interface and superlattice vibrations 558 G.A. TOOMBS, F.W. SHEARD and L. EAVES -Tunnelling and optic phonon emission in n+GaAs/(AlGa)As/n"GaAs/n+GaAs devices 561 SURFACE PHONONS V. BORTOLANI and G. SANTORO —The theory of surface phonons in metal s 566 J.P. TOENNIES —Helium atom time of flight spectroscopy of surface phonons 575 A. FLESZAR and R. RESTA — Interplanar and interatomic force constants in silicon and germanium 583 G. SANTORO and A. FRANCHINI —Theory of reconstruction in clean and covered metallic surfaces 589 F.W. de WETTE —Dynamics of noble gases adsorbed on graphite .... 596 A.G. EGUILUZ, R.F. WALLIS and A.A. MARADUDIN -Surface phonons in simple metals 604 H. IBACH, W. DAUM, S. LEHWALD, M. ROCCA and T.S. RAHMAN - Studies of surface phonons by electron energy loss spectroscopy 607 V. CELLI and D. EICHENAUER -The interaction of slow atoms with phonons at surfaces 612 A. MURAMATSU and W. HANKE - Many-body interactions and dynamical properties of semiconductor surfaces 617 B. FIREY and F.W. de WETTE —Restricted harmonic molecular dynamics: noble gases adsorbed on graphite 624 C.S. JAYANTHI, H. BILZ and W. KRESS -Surface vibrations at (111) surfaces of the FCC noble metals - I. The pseudo-particle model 630 W. GOLDAMMER, W. LUDWIG and W. ZIERAU - Surface dynamics of diamond-structure crystals 633 D. NEUHAUS, F. J00 and B. FEUERBACHER - Surface phonons on Pt(lll) 636 A.F. KHATER — Phonon scattering in rough surfaces 639 J.E. BLACK -Atom vibration at the (110) surface of FCC metals 642 XVII W.M. ROBERTSON, A.L..MORETTI and R. BRAY - Surface plasmon scattering by surface acoustic waves on thin silver films 647 P.A. THIRY, M. LIEHR, J.J. PIREAUX, R. CAUDANO, Ph. LAMBIN, J.P. VIGNERON and A.A. LUCAS —Optical surface phonons of dielectric materials investigated by high resolution electron energy loss spectroscopy 650 U. SCHRODER, F.W. de WETTE and W. KRESS -Relaxation of (0,0,1) surfaces of alkali halides, MgO and incipient ferroelectric IV-VI compounds 653 J. THROWE, F.M. LURIE and W.E. BRON -Effect of surface preparation on phonon reflection in silicon 657 D.P. JOUBERT — Interatomic force constants and the re- construction of transition metal surfaces 660 R. HAUG, E. SIGMUND and K. WEISS - A model for the phonon transmission at a liquid-helium solid interface including surface roughness 663 T.S. RAHMAN and H. IBACH - Lattice dynamics of adsorbate induced reconstruction of Ni(100) 666 R. REIGER, J. PRADE, U. SCHRODER, W. KRESS and F.W. de WETTE - Dynamics and relaxation of (001) surfaces of perovskites 669 M. TOMASEK — Origin of instability and reconstruction of the W(001) surface 673 C.G. EDDISON and M.N. WYBOURNE -Thermal phonon boundary scattering at sapphire surfaces 677 T. SEKINE, J.-I. WATANABE, K. UCHINOKURA and E. MATSUURA - Raman scattering and infrared reflectivity by surface phonon polariton on gratings of GaP 680 PHONONS AND POINT DEFECTS IN CRYSTALS V.W. RAMPTON and M.K. SAKER - T h e acoustic paramagnetic resonance of Li ions in Si 684 V.G. KVACHADZE, M.G. ABRAMISHVILI, T.L. KALABEGISHVILI and V.I. ALTUKHOV —Resonance scattering of phonons on F- and Fj-centers in ionic crystals 687 G. PUNZ and J. HAFNER - Local environment effects in the phonon spectra of subsitutionally disordered alloys 690 S.S. YOM, R.S. MELTZER and J.E. RIVES -Resonant Raman scattering of 23 cm phonons by Dy ions in LaFj 693 J.B. PAGE and M. PORTNEY —Theoretical Raman studies of the perturbed phonons of U-centers 696 xviii R.J.G. GOOSSENS, J.I. DIJKHUIS and H.W. de WIJN - Exchange- invoked relaxation of 29 cm"-'- phonons in ruby 699 G. SOLT and H. BECK —Change in the interatomic forces in the neighbourhood of an impurity 702 Yu.E. PERLIN — Multiphonon relaxation of local electronic states in crystals 705 P. BUSSEMER — Localized electron interaction with many phonons: optical absorption and Urbach-tail 708 A.S. BAKAI and N.P. LASAREV - T h e mechanisms of effect of sound on diffusion in solids .'. :. . 711 D.N. TALWAR and M. VANDEVYVER -Gallium isotope fine structure of boron antisite defect centers in GaAs 714 G.I. PILIPENKO, F.F. GAVRILOV, O.I. TYUTYUNNIK, D.V. OPARIN and V.I. TYUTYUNNIK - Investigation of phonon states and electron-phonon interaction in lithium hydride by optical spectroscopy 717 N. BUTLER, J. JOUGLAR, B. SALCE, L.J. CHALLIS and P.L. VUILLERMOZ — Anisotropic stress dependence of phonon scattering by Cr 3 + in GaP and InP 720 A.P. HERAUD, L.J. CHALLIS and A.A. GHAZI - Investigation of V^ + pairs in AI2O3 by phonon spectroscopy 723 M. GRYNBERG and J.-Y. PRIEUR -Comparative ultrasonic study of CdTe and Cd Q 3 7 M n 0 6 3 Te 726 PHONONS IN LOW-DIMENSIONAL SYSTEMS T. NAKASHIZU, T. SEKINE, K. UCHINOKURA and E. MATSUURA - Raman scattering in layered compound 4Hb-TaSe2 732 T. SEKINE, M. IZUMI, K. UCHINOKURA and E. MATSUURA - Raman scattering by amplitude modes in quasi-one-dimensional conductors, ( TaSe,j)2I and (NbSe,^) 10/3* 735 M.N. WYBOURNE, B.J. KIFF, D.N. BATCHELDER, D. GREIG and M. SAHOTA — Anisotropy of the thermal conductivity of polydiacetylene single crystals 738 M.S. BRODIN, I.V. BLONSKII and B.M. NITSOWICH - Lifshits- Komatsu effect in low-dimensional structures 741 F.G. MERTENS —Phonons in linear chain models with strongly anharmonic interactions 744 S.G. ABDULLAEVA and N.T. MAMEDOV -Peculiarities of phonon spectra and thermal properties of complex layered crystals 747 XIX E. BONJOUR, R. CALEMCZUK, A.F.- KHODER, P. GOUGEON, M. POTEL and M. SERGENT - Influence of different cations (M) on the specific heat of quasi one- dimensional ternary compounds M.Mo^Se, 750 K.J. BRITTON, M.A. BROWN and M.N. WYBOURNE -Direct thermal expansion measurements of a polydiacetylene single- crystal perpendicular to the carbon chain direction 753 G.-A. RACINE, F. PATTHEY, P. HERRMANN, P. MARTINOLI and H. BECK — Dynamics of commensurate, incommensurate and liquid-like vortex phases in 2-d superconductors 756 V.M. AGRANOVICH, P. BUSSEMER, Yu.N. GARTSTEIN and A. ZAKHIDOV — Internal structure of charge-transfer excitons: dimers and trimers 759 P. BUSSEMER, E. JAGER, M. MOSSA and G. PETER - Biphonons in linear anharmonic chains 762 M.V. BELOUSOV, B.E. VOL'F, E.A. IVANOVA and D.E. POGAREV - Experimental and theoretical study of density of states in quasi one-dimensional alloys 765 K. CARNEIRO, J.S. PEDERSEN and M. ALMEIDA - Phonons in two molecular conductors measured by inelastic neutron scattering 768 Y. HIKI, T. MUGISHIMA, Y. KOGURE and K. KAWASAKI - Thermal diffusivity in polyethylene determined by laser-pulse method 771 K. IWAHANA, H. KUZMANY and S. ROTH -Optical phonons of a bond-alternated zig-zag chain 774 N.E. MASSA, S. JANDL, A. CAILLE and M. BANVILLE - F a r infrared spectra of unidimensional ferromagnet CsNiF3 777 I.P. IPATOVA, A.V. SUBASHIEV and V.A. SHCHUKIN - T h e spectrum of optical phonons in ionic crystals with one-dimensional disorder 780 0. BRAFMAN, E. EHRENFREUND and Z. VARDENY -Amplitude modes and disorder in polyacetylene 783 INTERACTION OF PHONONS WITH EXTERNAL FIELDS V.V. LAVRIK, L.N. OVANDER and V.T. SHUNYAKOV -Raman scattering in crystals at polar phonons 788 E.M. IOLIN, I.R. ENTIN, V.N. GAVRILOV, E.V. ZOLOTOYABKO, B.V. KUVALDIN, E.A. RAITMAN and I.P. SMIRNOVA - T h e influence of high frequency ultrasonic waves on the dynamical diffraction of neutrons, X-ray and Mbssbauer radiation 791 XX E. LIAROKAPIS, G.A. KOUROUKLIS and E. ANASTASSAKIS - The phonon spectrum of LaF3 under high temperature and pressure 794 H.E. JACKSON and R.T. HARLEY - Quasielastic light scattering from diamond: the evolution of entropy-fluctuation scattering 797 V.F. BOLDYSHEV and M.J. KONCHATNYJ -Electromagnetic con- version of phonons by interaction with relativistic charged particles 800 B. SALCE and L.A. BOATNER —Static el-ectric field effects on thermal conductivity of pure KTaO3 and KTai_ x Nb x 0 3 crystals ; 804 J.E. DMOCHOWSKI - Multiphonon absorption edge of CdF 2 807 M.Ya.VALAKH, I. KOSACKI, A.P. LITVINCHUK and Yu.M. AZHNYUK - The phonon spectra and superionicity of pure, doped and mixed PbF2-type crystals 810 M.P. LISITSA and M.Ya. VALAKH —Phonon resonances in pure and mixed A 2 B 6 crystals 813 M.V. BELOUSOV, R.M. SARDARLY and K.R. ALLAKHVERDIEV - Investigation of density of phonon states in T1S and TISe crystals by Raman spectroscopy 816 ANHARMONIC INTERACTIONS IN QUANTUM LIQUIDS AND SOLIDS D. PINES —Elementary excitations in the helium liquids 820 W.G. STIRLING — N e w high-resolution neutron scattering investigations of excitations in liquid helium-4 829 A. SZPRYNGER and M. LUCKE - Dynamic structure factors and neutron scattering spectra of liquid ^He - ^ mixtures 836 H.J. LAUTER, H. GODFRIN and H. WIECHERT - Excitations in 4 He-films 842 Y. HIKI and F. TSURUOKA -Ultrasonic studies of solid helium-4 850 L.P. MEZHOV-DEGLIN -Phonon scattering in solid helium-4 855 A.A. LEVCHENKO and L.P. MEZHOV-DEGLIN - Phonon scattering on dislocations in deformed He crystals 859 S.B. OTA - Band Jahn Teller effect and superconductivity in A15 compounds 862 A.I. GOLOV, V.B. EFIMOV and L.P. MEZHOV-DEGLIN -Motion of positive ions in HCP 4 He 865 xxi I.J. LALOV — Two-phonon spectra: anharmonic modulation and manifestation 868 METHODS OF PHONON GENERATION AND DETECTION T.C. GUO, W.W. GUO and L.E. LARSEN — Thermoacoustic genera- tion in dielectrics induced by microwave pulses 874 S. PRANTS — Backward-wave dislocational phonon echoes 877 H. SCHWARTZ and K.F. RENK -Study of very high frequency acoustic phonons in diamond generated by defect- induced one-phonon absorption 880 W.E. BRON, J. KUHL and B.K. RHEE -Generation and detection of coherent optical phonons 883 V.V. SAMARTSEV, U.S. IVANOV, S.N. ANDRIANOV and U.E. SHEIBUT — Phonon-photon superradiance 888 W. SCHNEIDER, R. BAYERER and J. HEBER -Electron-phonon interaction of the 5 D4 crystal — field levels of Tb 3 + in yttrium aluminium garnet (YAG) 891 A. PUSHPAHASAN and K.S. VISWANATHAN - Focussing and de- focussing of ballistic phonons in diamond and Nb3Sn 894 T. JUHASZ, J.S. BAKOS and Cs. KUTI -Coherent optical generation and time resolved detection of phonons in calcite 897 U. KOPVILLEM and E. HOLODKEVICH - Nonresonant phonon echoes and avalanches 900 U. KOPVILLEM and E. HOLODKEVICH - Pseudomagnetic acoustic neutron and muon resonances 903 M. REIFFERS, P. SAMUELY, K. FLACHBART, S. JANOS, A.I. AKIMENKO and I.K. YANSON — Point-contact spectroscopy of Cu at 0,7 K 906 N.A. TULINA, Yu.A. SHITIKOV and M.G. ZEMLYANOV -Electron- phonon interaction and phonon spectrum of rhenium 909 N.A. TULINA — T h e peculiarities of the electron-phonon interaction in rhenium defected systems 912 PHONONS IN SEMICONDUCTORS M. SCHARLI, W. BUHRER and F. LEVY - Inelastic neutron scattering and lattice dynamics of HfSe2» SnSe 2 and TiS 918 P. CIEPIELEWSKI, I. GREGORA and V. VORLICEK -Raman scattering of Cd^_ x Mn x F 2 mixed crystals .... ; 921 xxii P.P. LOTTICI, A. PARISINI, C. RAZZETTI and G. ANTONIOLI - Zincblende-like phonons in mixed defect chalcopyrite semiconductors 924 C. PATEL, K.A. MASLIN and T.J. PARKER -Study of lattice anharmonicity in ZnSe by dispersive Fourier transform spectroscopy 927 A. FLESZAR, K. KUNC, R. RESTA and E. TOSATTI -Crucial role of exchange and correlation in lattice dynamics of germanium 930 G. KANELLIS, W. KRESS and H. BILZ ^ Dynamical and optical properties of Cu-halides 933 E. HARO and M. BALKANSKI, K.H. WANSER and R.F. WALLIS - Anharmonic effects in the Raman spectrum of silicon 937 D. STRAUCH and B. DORNER —Phonon eigenvector determination in GaAs at the X and L points 940 K. KUNC and Ph. HAGEGE - Lattice vibrations along (111) in gallium arsenide studied by the density functional method 943 S. BARONI and R. RESTA — Ab initio calculation of the Raman tensor in silicon 946 O.H. NIELSEN — Optical phonons and elasticity of diamond at megabar stresses: ab-initio calculations 950 G.P. SRIVASTAVA and K. KUNC -Phonons in germanium along the (110) direction: 'direct' approach 953 N. CHURCHER, K. KUNC and V. HEINE -Dynamical properties of silicon carbide: ab-initio calculations 956 W. METZGER and R.P. HUEBENER —Phonon focusing in Ge and Si imaged by electron beam scanning 959 C. FALTER, W. LUDWIG and M. SELMKE -Microscopic theory of lattice dynamics applied to Si, Ge, GaAs 962 T. SOTA and K. SUZUKI —Ultrasonic attenuation of doped semiconductors in the weak localization regime — the effect of magnetic fields 965 M. KOHNO, K. ASANO and K. SUZUKI - Sound velocity measurement in Sb-doped Ge near the metal-nonmetal transition 968 P.G. DACOSTA and K. KUNC —First-principle force constants and lattice dynamics of germanium 971 INTERACTION OF PHONONS WITH OTHER EXCITATIONS, PRESSURE AND TEMPERATURE EFFECTS S.A. LEE, D.A. PINNICK, S.M. LINDSAY and R.C. HANSON - Brillouin studies of solid HF at high pressure 976 XXIII B. SALCE, R. CALEMCZUK, E. BONJOUR, R.L. MIGONI and L.A. BOATNER — Low temperature thermal properties of KTaO 3 and KTa 9? Nb Q 3 0 3 979 A.V. BELUSHKIN, I. NATKANIEC, T. WASIUTYNSKI and J. WASICKI -Phonons in biphenyl and 4,4'- difluoro-biphenyl crystals 982 M. DAHL and G. SCHAACK — Davydov-splitting and interionic interaction in PrFj 985 C. RAPTIS and E.W.J. MITCHELL —Temperature dependence of phonon spectra in alkali halide* crystals 988 B.P. ANTONYUK, P. BUSSEMER and L. LEINE - Exciton luminescence due to strong laser fields: nonlinear temperature behaviour and bistability 991 Author Index 993

DOCUMENT INFO

Shared By:

Categories:

Tags:

Stats:

views: | 26 |

posted: | 12/3/2011 |

language: | English |

pages: | 16 |

OTHER DOCS BY gegeshandong

How are you planning on using Docstoc?
BUSINESS
PERSONAL

By registering with docstoc.com you agree to our
privacy policy and
terms of service, and to receive content and offer notifications.

Docstoc is the premier online destination to start and grow small businesses. It hosts the best quality and widest selection of professional documents (over 20 million) and resources including expert videos, articles and productivity tools to make every small business better.

Search or Browse for any specific document or resource you need for your business. Or explore our curated resources for Starting a Business, Growing a Business or for Professional Development.

Feel free to Contact Us with any questions you might have.