solid state — communications an international journa i volume 80 SOLID STATE COMMUNICATIONS EDITOR-IN-CHIEF, ELIAS BURSTEIN ASSOCIATE EDITOR-IN-CHIEF, MANUEL CARDONA EDITORIAL POLICY COMMITTEE P. AIGRAIN, Chairman P. G. DE GENNES J. A. KRUMHANSL W. M. LOMER S. LUNDOVIST H. SUHL Y. TOYOZAWA BOARD OF EDITORS V. M. AGRANOVICH, Moscow Institute of Spectroscopy of the Academy of Sciences, U.S.S.R. Academgorodok, Podolski r-n, Moscow obl. 142092, U.S.S.R. S. ALEXANDER, Rehovot Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel M. BALKANSKI, Paris Laboratoire de Physique des Solides, Université Pierre et Marie Curie, 4, Place Jussieu, Tour 13-2e Etage, 75230 Paris Cedex 05, France I. BALSLEV, Odense Fysisk Institut, Odense Universitet, DK-5230 Odense M, Denmark R. BARRIE, Vancouver Department of Physics, University of British Columbia, Vancouver 8, British Columbia, Canada V6T 1W5 P. BURLET, Grenoble Centre d’Etudes Nucléaires, DRF/SPh - MDN, 85x, 38041 Grenoble Cedex, France +G. BuRNS, New York Deceased. (Deputy Editor-in-Chief) C. CALANDRA, Trieste Laboratorio TASC-INFM, Padriciano, 99, 34012 Trieste, Italy M. F. CoL.ins, Hamilton Department of Physics, McMaster University, Hamilton, Ontario, Canada L8S 4M1 P. H. DEDERICHS, Jiilich Institut fiir Festkérperforschung der Kernforschungsanlage Jiilich, GmbH, 5170 Jiilich 1—Postfach 1913, Federal Republic of Germany G. FAsOL, Cambridge Hitachi Cambridge Laboratory, c/o Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, U.K. R. FIESCHI, Parma Istituto di Fisica, Universita degli Studi, 43100 Parma, Italy Z. GAN, Beijing Department of Physics, Peking University, Beijing 100871, People’s Republic of China C. E. T. GONCALVES DA Laboratoire Nacional de Luz Sincrotron/CNPq/MCT, Caixa Postal 6192, Campinas 13081 SP, SILVA, Campinas Brazil M. GRYNBERG, Warsaw Institute of Experimental Physics, University of Warsaw, 00-681 Warsaw, ul.Hoza 69, Poland G. GUNTHERODT, Aachen II. Physikalisches Institut, RWTH Aachen, Templergraben 55, D-5100 Aachen, Federal Repub- lic of Germany J. JOFFRIN, Paris Université Paris-Sud, Batiment 510, 91405 Orsay, France H. KAMIMURA, Tokyo The Science University of Tokyo, Department of Applied Physics, Faculty of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162, Japan L. V. KELDYSH, Moscow P. N. Lebedev Institute, Academy of Sciences of the U.S.S.R. Leninskii Prospect 53, 117924 Moscow, U.S.S.R. W. Y. KUAN, Beijing (On leave) B. LUNDOviIsT, Géteborg Institute of Theoretical Physics, Chalmers University of Technology, S-412 96 Géteborg, Sweden A. H. MACDONALD, Department of Physics, Indiana University, Bloomington, Indiana 47405, U.S.A. Bloomington A. A. MARADUDIN, /rvine Department of Physics, University of California, Irvine, California 92717, U.S.A. T. P. MARTIN, Stuttgart Max-Planck-Institut fiir Festk6rperforschung, Heisenbergstrasse 1, 7000 Stuttgart 80, Federal Republic of Germany E . MOLINARI, Rome CNR Istituto “Corbino”, Via Cassia 1216, 00189 Rome, Italy B. MUHLSCHLEGEL, Koln Institut fiir Theoretische Physik, Universitat zu K6ln, Zulpicher Str. 77, D-5000 K6in 41, Federal Republic of Germany A . OxuI, Osaka Department of Applied Physics, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan A. PINCZUK, New Jersey Room 1D - 433, AT&T Bell Laboratories, Murray Hill, New Jersey 07974, U.S.A. Cc . N. R. RAO, Bangalore Indian Institute of Science, Bangalore 560012, India R. H. SILSBEE, /thaca Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, U.S.A. J. TAuc, Providence Box D, Division of Engineering, Brown University, Providence, Rhode Island 02912, U.S.A. T. TsuZUKI, Sendai Department of Physics, Faculty of Science, Tohoku University, Aoba-ku, Sendai 980, Japan D. VAN Dyck, Antwerp University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium P. WACHTER, Ziirich Laboratorium fiir Festk6rperphysik der ETH, CH-8093 Ziirich, Hénggerberg, Switzerland F. YNDURAIN, Madrid Dpto. de Fisica de la Materia Condensada, C-III, Universidad Aut6noma de Madrid, Canto- blanco, 28049-Madrid, Spain A. ZAWADOWSKI, Budapest Institute of Theoretical Physics, Eétvés Lorand University, H-1088 Budapest, Puskin Utca 5 — 7, Hungary PRODUCTION EDITOR M. R. JAKEMAN, Production Department, Pergamon Press plc, Headington Hill Hall, Oxford OX3 OBW, U.K. SOLID STATE COMMUNICATIONS is a companion journal to THE JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS. Publishing and Advertising Offices: Pergamon Press Inc., 395 Saw Mill River Road, Elmsford, NY 10523, U.S.A.; Pergamon Press plc, Headington Hill Hall, Oxford OX3 OBW, U.K. Tel., Oxford (0865) 794141. Fax., Oxford (0865) 60285. 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Postmaster send address corrections to Solid State Communications, c/o Pergamon Press Inc.. 395 Saw Mill River Road, Elmsford, NY 10523, U.S.A. CONTENTS OCTOBER VOLUME 80, NUMBER 1 General Papers R. Bradshaw and R. J. Sladek Ultrasonic study of photoconductivity in undoped n-GaAs at low temperatures G. Srinivasan Anisotropy in auto-oscillation properties in spin-wave instabilities in yttrium iron garnet films H. Koinuma, M. Yoshimoto, H. Nagata and Fabrication and anomalous conducting behavior of atomically T. Tsukahara regulated (SrVO3_,)/(SrTiO; - ,) superlattices D. Rioux and G. Margaritondo Semiconductor-on-metal Schottky barriers: Ge on Ni and Ag S. Nakashima and M. Hangyo Raman intensity profiles and the stacking structure in SiC polytypes Sung Ho Lee and Woong Tae Kim A Mossbauer effect study on the magnetic oxide 5Fe, o4Niy 9603 - 4A1,0, - $i0 T. K. Sham, A. Bzowski, M. Kuhn and Observations on the d-band width of Au-Ag and Au—Cu C. C. Tyson alloys H. Kanzaki and Y. Tadakuma Indirect-exciton confinement and impurity isolation in ultrafine particles of silver bromide L. Meza-Montes, M. A. Rodriguez and Tunneling phenomena of hot electrons in semiconductor J. L. Carrillo systems Superconductors and Superconductivity Z. Radovic, M. Ledvij and Phase diagram of superconductor-ferromagnet superlattices L. Dobrosavljevi¢-Gruji¢ Wu Ting, K. Fossheim and T. Legreid On the structural phase transition temperature in La,_,(Sr,Ba),CuO,_,: its dependence on pressure, doping concentration, and oxygen deficiency K. Asokan, S. Rangarajan and K. B. Garg A new look at isotope effect in superconductors J. C. Phillips Isotope effect in high-7,. superconductors General Papers (contd) R. G. Deich, M. S. Abdrakhmanov, Free charge carriers and the cathodoluminescence of Nal D. P. Erts and A. P. Kuyanov crystal IV Vol. 80, Nos 1-12 Contents J. van Elp, B. G. Searle, G. A. Sawatzky 67 Ligand hole induced symmetry mixing of d* states in and M. Sacchi Li,Ni;_,O, as observed in Ni 2p X-ray absorption spectroscopy G. Kliche 73 Coupled plasmon—phonon modes in CoP, C. Gély-Sykes, C. Corbel and R. Triboulet 79 Positron trapping in vacancies in indium doped CdTe crystals V. Agranovich and S. Mukamel 85 Note on retardation effects in the dielectric optical response i Instructions for authors on the preparation of camera-ready manuscripts for Solid State Communications OCTOBER VOLUME 80. NUMBER 2 1991 General Papers G. Stergioudis. G. Ivanov, 89 Influence of chromium and silicon concentration on crys- S. C. Chadjivasiliou, A. E. Papadimitriou, tallization behaviour, electrical resistivity and magnetic C. Achilleos, T. Spassov and properties of (FeCr)BSi amorphous alloys I. A. Tsoukalas E. R. Youngdale, J. R. Meyer, 95 In-band nonlinear optical properties of Pb; _ ,Sn,Se C. A. Hoffman, F. J. Bartoli and A. Martinez S. Lin, K. Noonan, B. J. Feldman, 101 Electrical and electron spin resonance measurements of Dong Min and M. T. Jones amorphous hydrogenated carbon nitride Superconductors and Superconductivity Yunhui Xu and Weiyan Guan 105 Ion size effect of T, in (R,_,Pr,)BayCu;07_, systems (R = Er, Y, Dy, Gd and Eu) B. Schulz, B. Schliepe, W. Wisny and Critical Josephson-fields and H, of ceramic Bi,Sr,Ca,Cu;0j9 K. Baberschke and their relation to the granular structure C. V. Tomy, R. Kumar and A. K. Grover Hierarchy of quasi-irreversibility lines in niobium General Papers (contd) A. K. Pandit, M. Prasad, T. H. Ansari, 125 Electrical conduction in molybdenum trioxide single crystal R. A. Singh and B. M. Wanklyn T. Lei, M. Toledo-Quinones, R. J. Molnar Excitonic transitions in GaAs—AlGaAs superlattices studied and T. D. Moustakas with lateral photoconductivity Ma Zhongquan and Jin Tao The characteristics of defects in hydrogen ion irradiated MIS Hua Xia, X. K. Zhang, K. J. Chen, Elastic properties of amorphous hydrogenated silicon film Wei Zhang, Y. Y. Chen and Duan Feng H. R. Park and S. Wagner 141 Dependence of the saturated light-induced photoconductivity on macroscopic properties of hydrogenated amorphous silicon J. G. Cordes and A. K. Das 145 Linear response functions for a two-layer electron gas Vol. 80, Nos 1-12 Contents OCTOBER VOLUME 80, NUMBER 3 1991 General Papers A. Hunt 151 The ac conductivity of the Fermi glass: a model for glassy conduction S. Komiyama, H. Nii, M. Ohsawa, 157 Resistance and resistivity of two dimensional electron gas at S. Fukatsu, Y. Shiraki, R. Itoh and high magnetic fields H. Toyoshima I. K. Kristensen and O. P. Hansen 165 Measurements of transient Hall effect in Gap 72Alp »2As/GaAs heterostructures M. Villeret and S. Rodriguez 169 Origin of the forbidden transitions in diluted magnetic semiconductors M. Zoli 173 Anharmonic broadening of surface phonons in Cu(1 1 1) I. A. Abrikosov, Y. H. Vekilov, 177 The investigation of electronic and thermodynamic properties A. V. Ruban and D. Ya. Kats of disordered NiAl alloys Superconductors and Superconductivity T. K. Dey, H. K. Barik and K. L. Chopra 185 Effect of antimony addition on the temperature dependence of thermal conductivity of (Big gPbo 2-,Sb,).Sr,Ca,Cu;0, superconductors S. Kahlich, D. Schweitzer, I. Heinen, 191 (BEDO-TTF),ReQ(OH,O):: a new organic superconductor Song En Lan, B. Nuber, H. J. Keller, K. Winzer and H. W. Helberg H. A. Borges and M. A. Continentino 197 Pressure study of the paraconductivity of high fT, superconductors I. Fugol, G. Saemann-Ischenko, Optical transition studies of YBa,Cu;07_,5 superconducting V. Samovarov, Yu. Rybalko, V. Zhuravlev, films in 1.5—-3.0 eV spectral range: temperature evolution and Y. Strébel, B. Holzapfel and P. Berberich photoinduced changes of the absorption spectra General Papers (contd) M. M. Hafiz, M. A. Osman, 209 Differential scanning calorimetric study of Se7Ge2Sbjo A. S. Abd El-halim and A. Abu El-Fadl chalcogenide glass Zheng Wen-Chen Investigation of the anion distortion parameter u for chromium doped ZnGa,O, spinel C. D. MacPherson, D. Q. Hu and 217 Room-temperature adsorption of benzene on Si(1 1 1) 7 x 7 K. T. Leung by thermal desorption spectrometry R. Mici¢, I. Buri¢ and B. Draskovi¢ 221 The photoluminescence of cerium doped magnesium bromide Jiang Weilin, Zheng Zongshuang and 225 Helium- and lithium-ion channelinign single crystals of silicon, Zhu Peiran zirconium dioxide, and strontium titanate I. Vergara, J. Garcia Solé and 231 Ultraviolet excited luminescence of Ti: YAIO; B. Henderson G. P. Morgan, K. Ogawa, K. Hiruma, Optical characterization of GaAs quantum wire microcrystals vi Vol. 80, Nos 1-12 Contents H. Kakibayashi and T. Katsuyama G. André, P. Thuéry, M. Pinot, A. Oles 239 Magnetic structure of TbCo,B, and A. Szytuta A. A. Belyanin, V. V. Kocharovsky and 243 Superradiance phenomenon in semiconductor magnetooptics Vl. V. Kocharovsky OCTOBER VOLUME 80, NUMBER 4 1991 CONTENTS General Papers E. K. Evangelou, A. D. Horevas, 247 A microcomputer based deep level transient spectroscopy G. E. Giakoumakis and system N. G. Alexandropoulos H. Nakano, T. Akazaki, J. Nitta and 251 Thickness dependence of Cooperon lifetime in H. Takayanagi quasi-two-dimensional InAs films Superconductors and Superconductivity A. P. Litvinchuk, C. Thomsen and 257 Self-energies of infrared-active phonons in RBa,Cu;07_ 5 M. Cardona R. A. Fisher, B. F. Woodfield, S. Kim, 263 Specific heat of UPt; in the vicinity of the antiferromagnetic N. E. Phillips, L. Taillefer, A. L. Giorgi ordering at 5K and J. L. Smith K. Frohlich, A. Rosova, L. Nganga, 267 A.C. susceptibility characterization of as grown YBa,Cu;O;-_ , J. P. Chaminade and P. Dordor single crystals G. K. Padam, R. B. Tripathi, M. Sharma, 271 Transformation of 2212 to 2223 phase in the Bi-Sr-Ca—Cu- D. K. Suri, S. U. M. Rao, K. C. Nagpal O system and B. K. Das C. G. S. Pillai 277 Thermal conductivity of YBa,Cu,;0,_, from ambient to 1150 K General Papers (contd) T. Z. Kachlishvili 283 On some magnetic field induced effects in 2-D Cd,_,Mn,Te V. M. Agranovich, V. Ya. Chernyak, Transient gratings in disordered media and interference of K. I. Grigorishin and E. I. Ogievetsky backscattered radiation I. Nowik 295 Spin fluctuations and exchange fields acting on gadolinium in Pr, _,Gd,Ba,Cu,0, F. Babalievski and A. Milchev 299 Roughening of quasicrystal interface in two dimensions R. Baltramiejinas, V. Gavryushin and Giant nonlinear losses in GaSe crystals under double G. Ragiukaitis two-photon resonant conditions. Valence band structure from induced free carrier absorption i Author Index Nos 1-4 Vol. 80, Nos 1-12 Contents NOVEMBER VOLUME 80, NUMBER 5 199] CONTENTS General Papers Ka-Di Zhu and Shi-Wei Gu 307 Polaronic states that incorporate effects of phonon confinement in a rectangular quantum well wire Hua Li, Liu Jun and Nai-Ben Ming 311 Monte-Carlo simulation of crystal growth with diffusion employing an anisotropic model M. Hanumanthu, K. Annapurna and S. 315 Fluorescence characteristics of Nd**-doped heavy metal Buddhudu fluoride glasses B. Szentpali, B. Kovacs, D. Huber, 321 Effect of electron irradiation on the mobility profile in GaAs C. D. Kourkoutas, P. C. Euthymiou and FATFETs G. E. Zardas K. Kunc, R. Zeyher, A. I. Liechtenstein, 325 Ab-initio calculation of the charge and lattice modulation in M. Methfessel and O. K. Andersen BaBiO, T. Goto, S. Saito and M. Tanaka 331 Size quantization of excitons in PblI, microcrystallites I. Gorezyca and N. E. Christensen 335 Band structure and high-pressure phase transition in GaN Y. Lépine 339 Effect of a Debye cutoff on the ground-state energy of the Frohlich polaron Superconductors and Superconductivity M. L. Kuli¢, J. Keller and K. D. Schotte 345 Are heavy fermions UPt;, UBe,,;, CeCu,Si, s-wave superconductors? Y. Chen and D. Forster On the normal state of the tJ model General Papers (contd) H. C. Poon and B. C. Khanra 361 Surface compositions of the ordered and disordered phases of AuCu,(100) by cluster Bethe lattice method (CBLM) K. M. Hung and G. Y. Wu Theoretical study of energy levels of heterostructures in a transverse magnetic field: a transfer matrix approach NOVEMBER VOLUME 80, NUMBER 6 General Papers Shuhan Lin and B. J. Feldman 371 Thermal and hydrogen plasma annealing of amorphous hydrogenated carbon S. Sugawa, K. Ohmi, M. Yamanobe and 373 An experimental observation of photo-induced carrier Y. Osada multiplication in hydrogenated amorphous silicon K. Lebecki and A. Twardowski 377 The role of Jahn-Teller effect on the magnetic properties of Fe-based semimagnetic semiconductors Vili Vol. 80, Nos 1-12 Contents A. S. Volkov, H. Herremans, 383 Effect of high-temperature annealing on the distribution of W. Grevendonk, V. Baptist, gap states in a-Si:C:H S. V. Chernyshov, O. I. Konjkov, W. Lauwerens and G. J. Adriaenssens H. Nakata, E. Otsuka and E. E. Haller 387 Dynamical Stark effect of bound excitons in germanium doped with beryllium or zinc G. Bonfait, E. B. Lopes, M. J. Matos, 391 Magnetic field dependence of the metal—insulator transition R. T. Henriques and M. Almeida in (Per),Pt(mnt), and (Per),Au(mnt), Superconductors and Superconductivity A. A. Romanyukha, Yu. N. Shvachko, 397 Possible increase of 7. in YBaKCuO A. A. Koshta, V. V. Ustinov, V. A. Starodub, M. A. Obolenskii and K. B. Chashka H. A. Blackstead 401 Current-activated residual surface resistance in high temperature superconductors H. A. Blackstead, D. B. Pulling, J. Spatek 405 Phase-slip dissipation in crystalline La, gSrp 2NiO,_5 and J. M. Honig H. Mori, I. Hirabayashi, S. Tanaka, 411 Superconductivity in (BEDT-TTF),Pt(CN),H,O T. Mori, Y. Maruyama and H. Inokuchi General Papers (contd) J. R. Buschert and R. Colella 419 Photostriction effect in silicon observed by time-resolved X-ray diffraction G. N. Raikar, P. J. Hardman, C. A. Muryn, 423 Valence-band structure of TiO, along the [-2-M line G . van der Laan, P. L. Wincott, G . Thornton and D. W. Bullett R. Ramirez-Bon, F. Sanchez-Sinencio, 427 Electron transient transport in CdTe polycrystalline films G. Gonzalez de la Cruz and O. Zelaya Y . Kondo, S. Hoshina, M. Yanagihara, 431 Intrinsic luminescence excitation spectrum around the Cl 1s H . Kimura, T. Hanyuu and S. Yamaguchi absorption edge in KCl N . V. Joshi, M. Matta, P. Quintero and 435 Optical and electro-optical properties of Zn, _ ,Ti,Se J. M. Martin N. T. Son, A. B. van Oosten and 439 Electron paramagnetic resonance of nickel in silicon—II. C. A. J. Ammerlaan Hyperfine and quadrupole interactions B. X. Liu and J. R. Ding 447 Evolution of Yb-particle fractals towards equilibrium morphology on Co-Yb alloy thin films NOVEMBER VOLUME 80, NUMBER 7 1991 General Papers P. Saint-Grégoire, R. Almairac, A. Astito, 451 Incommensurate phase and transitions in {(CH3)4,P},CuBr, J. Lapasset and J. Moret Song-Ho Byeon, G. Demazeau, L. Fournes, 457 Influence of competing bonds along the c-axis on the local Vol. 80, Nos 1-12 Contents ix J. M. Dance and Jin-Ho Choy distortion of the (CoO,) octahedron in K,NiF4-type oxides Ao, sola; soMgo soCop, s9O4(A’ = Ca, Sr and Ba) A. Aydinli, A. Compaan, Polycrystalline Cd, _,Zn,Te thin films on glass by pulsed laser G. Contreras-Puente and A. Mason deposition C. Z. Wang, C. T. Chan and K. M. Ho Overtone phonon states and the sharp two-phonon Raman peak in diamond G. Bongiovanni and J. L. Staehli Subband renormalization in the presence of a dense electron-hole plasma in a quantum well Nguyen Ba An and Le Thi Cat Tuong Determination of the exciton-free carrier coupling constant in semiconductors S. J. Duclos, R. C. Haddon, S. H. Glarum, The influence of oxygen on the Raman spectrum of Ceo films A. F. Hebard and K. B. Lyons Meng Jian and Ren Yufang Investigation of the photoelectronic properties of rare earth monophosphides R. Riedinger, H. Dreyssé, G. Ceder, Electronic structure of disordered alloy described with a C. Wolverton and D. de Fontaine reduced set of configurations C. W. Yuan, C. L. Lu, Y. Liang, N. Gu Colour transition of polydiacetylene multilayers caused by and Y. Wei their interaction with several kinds of gases Superconductors and Superconductivity R. S. Rubins, J. E. Drumheller, On the unusual signals observed in a ceramic Y-Ba—Cu—O S. L. Hutton, T. D. Black and D. Y. Jeong sample A. V. Bespalov, G. N. Gol’tsman, Determination of the far-infrared emission characteristic of a A. D. Semenov and K. F. Renk cyclotron p-germanium laser by use of a superconducting Nb detector A. D. Semenov, P. T. Lang, K. F. Renk Fast far-infrared to visible light response of a YBa,Cu,;0,_, and I. G. Gogidze film measured with subnanosecond radiation pulses . Mikhailovsky, S. V. Shulga, Thermal pair-breaking in superconductors with strong . Karakozov, O. V. Dolgov and electron—phonon interaction . Maksimov J. C. Phillips Theoretical model of high-temperature superconductivity A. Heinrich and W. Urland The system Bay ,6Ky.4- ,Cs,BiO3:superconductivity dependence of 7, on the cesium content General Papers (contd) J. Jiang, S. Ramasamy, R. Birringer, Structure and antiferromagnetic phase transformation in U. Gonser and H. Gleiter nanocrystalline FeF, L. Vasiliu-Doloc and M. Apostol The orthorhombic-to-tetragonal transition in La,_,M,CuO, T. Sakamoto, Y. Takagaki, K. Gamo, Impurity and boundary roughness _ scattering’ in S. Namba, S. Takaoka and K. Murase GaAs-—Al,Ga, _,As electron waveguides L. Paslovsky and J. E. Lowther Electronic structure of a nickel point defect in diamond t Erratum X Vol. 80, Nos 1-12 Contents NOVEMBER VOLUME 80, NUMBER 8 1991 General Papers M. Itoh, M. Shikano, H. Kawayji and 545 Structural aspects on the variations of electric and magnetic T. Nakamura properties of the layered compound system Stn+1VnO3n+1-(" - 1, 2, x 0) R. Ramirez, G. Lifante, J. L. Matute, 549 Light scattering from metallic colloids in KCl:O,:K as a J. A. Gonzalo and M. Gémez function of annealing temperature M. W. Berz, L. C. Andreani, 553 Exchange splitting of light hole excitons in Al, - ,Ga,As—GaAs E. F. Steigmeier and F.-K. Reinhart quantum wells Guang Mei, S. Carpenter and P. D. Persans 557 Steady-state photomodulation mechanisms in CdS,Se;-_y doped glass Nikum, M. Banerjee, P. B. Vidyasagar, 563 Tail states in hydrogenated amorphous silicon studied by V. Bhoraskar and S. Babras thermoluminescence A. P. Osério, M. Z. Maialle and 567 Impurity-bound magnetopolaron in GaAs quantum well H ipdlito structures T akaoka, T. Sawasaki, K. Tsukagoshi, 571 Influence of edge current and contact on nonlocal Shubnikov— Oto, K. Murase, K. Gamo and de Haas oscillations in macroscopic GaAs/AlGaAs wire .N amba J. O. Tocho, E. Camarillo, F. Cuss6, 575 Optical detection of new Nd** sites in LINbO;:Nd F. Jaque and J. Garcia-Solé G. Durinck, H. Poelman, P. Clauws, 579 Observation of surface phonons on the (001) and (100) L. Fiermans, J. Vennik and G. Dalmai surfaces of anatase minerals F. Maes, P. Matthys, F. Callens and 583 EPR of Se.” in NaBr E. B oesman R. Bartolino, F. Rustichelli, N. Scaramuzza, 587 QENS experiments on the copper liquid crystalline C. C. Versace, M. Ghedini, M. C. Pagnotta, coordination compound (DOBBA),Cu S. Armentano, M. A. Ricci and P. Benassi G. N. Henderson, T. K. Gaylord, 591 Ballistic electron emission testing of semiconductor E. N. Glytsis, P. N. First and W. J. Kaiser heterostructures J. Viehland, S. Lin, B. J. Feldman, 597 Search for the nitrogen dangling bond in amorphous K . Kilgore and M. T. Jones hydrogenated carbon nitride O. J. Zogat, B. Nowak and K. Niedzwiedz 601 !Zr nuclear magnetic resonance in tetragonal ZrH, = . Ohmori, M. Uchida, K. Muro and 605 Effects of alkyl chain length and carrier confinement layer on K. Yoshino characteristics of poly(3-alkylthiophene) electroluminescent diodes Y. Maniwa, K. Mizoguchi, K. Kume, 609 NMR investigation on the CS,- and benzene-grown Ce K. Kikuchi, I. Ikemoto, S. Suzuki and crystals Y. Achiba J.-E. Jorgensen 613 X-ray diffraction study of the tetragonal to orthorhombic phase transition and structural defects in Pb,Sr,LnCu;QOxg, Ln = Ho,Nd Superconductors and Superconductivity