solid state Communications an international journa i volume 101 SOLID STATE COMMUNICATIONS EDITOR-IN-CHIEF, MANUEL CARDONA ASSOCIATE EDITOR-IN-CHIEF, ARON PINCZUK BOARD OF EDITORS H. AKAI, Osaka Department of Physics, Graduate School of Science, Osaka University, 1-16 Machikaneyama, Toyonaka, Osaka 560, Japan S. ALEXANDER, Rehovot Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel G. BASTARD, Paris Laboratoire de Physique de la Matiére Condensee de l’ENS, 24 rue L’homond, F-75231 Paris Cedex 05, France P. BURLET, Grenoble CEA Grenoble, DRFMC/SPSMS — MDN, F-3804 Grenoble Cedex 09, France C. CALANDRA, Modena Universita di Modena, Dipt. di Fisica, Via Campi 213/A, I-41100 Modena, Italy L. L. CHANG, Clear Water Bay Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong R. G. CLARK, New South Wales National Pulsed Magnet Laboratory, The University of New South Wales, P.O. Box 1, Kensington, New South Wales, Australia, 2033 M. F. Cotuins, Hamilton Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada J. H. Davies, Santa Barbara Center for Quantized Electronic Structures, University of California, Santa Barbara, CA 93106, U.S.A. P. H. DEDERICHS, Jiilich Institut fiir Festkérperforschung der Kernforschungsanlage Jiilich, GmbH, Postfach 1913 D- 52428 Jiilich, Germany F. J. DiSaLvo, Ithaca Cornell University, Chemistry Department, Baker eg eS Ithaca, NY 14853-1301, U.S.A. R. C. Dynes, La Jolla University of California, Physics Department, La Jolla, CA 92093, U.S.A. A. L. EFros, Salt Lake City On leave from September 1997 until September 1998. Department of Physics, University of Utah, 201 Fletcher Building, Salt Lake City, UT 84112, U.S.A. H. EscuriG, Dresden MPG Research Group Electron Systems, Department of Physics, TU Dresden, D-01062 Dresden, Germany Z. GAN, Beijing Department of Physics, Peking University, Beijing 100871, People’s Republic of China C. E. T. GONCALVES DA SILVA, gern Nacional de Luz Sincrotron/CNPq/MCT, Caixa Postal 6192, Campinas 13081-970 Campinas SP, Brazi M. GRYNBERG, Warsaw Institute of Experimental Physics, University of Warsaw, ul.Hoza 69, PL-00681 Warsaw, Poland E. L. IVCHENKO, St Petersburg A. F. Ioffe Physico-Technical Institute, Politechnicheskaya 26, 194021 St Petersburg, Russia J. JOFFRIN, Paris Université Paris-Sud, Laboratoire de Physique des Solides, Batiment 510, F-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, Russia J. KUHL, Stuttgart Max-Planck-Institut fiir Festk6rperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany D. J. Lockwoob, Ottawa IMS, Building M-36, National Research Council, Ottawa, Ontario K1A OR6, Canada H. VON LOHNEYSEN, Karlsruhe Physikalisches Institut der Universitat Karlsruhe (TH), Engesserstrasse 7, D-76128 Karlsruhe, German S. G. LoutE, Berkeley Universityo f California, Physics Department, 366 Le Conte Hall Nr. 7300, Berkeley, CA 94720- 7300, U.S.A. B. LUNDQVIST, Géteborg Institute of Theoretical Physics, Chalmers University of Technology, S-412 96 Géteborg, Sweden : A. H. MACDONALD, Bloomington Department of Physics, Indiana University, Bloomington, IN 47405, U.S.A. E. E. MENDEZ, Stony Brook PA osa r of Physics, State University of New York at Stony Brook, Stony Brook, NY 11794- E. MOLINARI, Modena Dipartimento di Fisica, Universita di Modena, Via Campi 213/A, I-41100 Modena, Italy R. PHILLIPS, Cambridge Cavendish Laboratories, Madingley Road, Cambridge CB3 OHE, U.K. C. N. R. RAo, Bangalore Indian Institute of Science, CSIR Centre of Excellence in Chemistry, Bangalore 560012, India T. TsuzuKI, Sendai Department of Physics, Faculty of Science, Tohoku University, Aoba-ku, Sendai 980, Japan S. Usuiopa, Sendai Research Institute of Electrical Communication, Tohoku University, Sendai 980-77, Japan D. VAN DYCK, Antwerp University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium P. WACHTER, Ziirich Laboratorium fiir Festkérperphysik 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 Physics, Technical University of Budapest, XI.Budafoki ut. 8, H-1521 Budapest, Hungary PRODUCTION CONTACT T. BEUZEVAL, RAM Journals, Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, U.K. SOLID STATE COMMUNICATIONS is a companion journal to THE JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS. 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POSTMASTER: Please send address corrections to Solid State Communications, c/o Elsevier Science Regional Sales Office, Customer Support Department, 655 Avenue of the Americas, New York, NY 10010. JANUARY VOLUME 101, NUMBER 1 (Published 22 November 1996) CONTENTS III Publisher’s Announcement T. Saito, Y. Hashimoto and T. Ikoma 1 Band discontinuities at the (100) GaAs/AlAs interfaces with In- and P-insertion layers: effects of isoelectronic impurity layers V. V. Kokorin, V. A. Chernenko, J. Pons, C. Segu Acoustic phonon mode condensation in Ni,;MnGa compound and E. Cesari M. A. Butturi, M. C. Carotta, G. Martinelli, Effects of ageing on porous silicon photoluminescence: correla- L. Passari, G. M. Youssef, A. Chiorino and tion with FTIR and UV-vis spectra G. Ghiotti Bong Yeol Ryu, Jai Il Ryu, Hyun Chul Kim and Very low temperature growth of polycrystalline silicon using Jin Jang SiF,/H, M. Apostol On a structural distortion effect in the NMR-spectrum of alkali fullerides A. Meftah and M. Oueslati Influence of ionic character on GaAs,_,P,:N photoluminescence spectra S. P. Duttagupta, X. L. Chen, S. A. Jenekhe and Microhardness of porous silicon films and composites P. M. Fauchet H. Arizpe-Chavez, F. J. Espinoza-Beltran, Cubic to hexagonal phase transition in CdTe polycrystalline thin R. Ramirez-Bon, O. Zelaya-Angel and films by oxygen incorporation J. Gonzalez-Hernandez H.-P. Chiang, P. T. Leung and W. S. Tse Optical properties of composite materials at high temperatures L. B. Kiss, U. Klein, C. M. Muirhead, Diffusive fluctuations, long-time and short-time cross-correlations J. Smithyman and Z. Ging] in the motion of vortice-pancakes in different layers of YBCO/PBCO superlattices J.-S. Kim, J.-H. Song, S.-H. Suh and S.-J. Chung Enhancement of magnesium incorporation in nitrogen doped ZnMgSSe grown by molecular beam epitaxy L. K. Hanamoto and C. S. M. Partiti Quadrupole interaction in (NH,),FeF;-H,O K. Chen, H. Jiang, J. Chen and D. Yin Thermal diffusion of vortices and self-organized criticality G. Harari and A. D. S. Nagi Weak anisotropic impurity scattering in unconventional super- conductors A. Yacoby, H. L. Stormer, K. W. Baldwin, Magneto-transport spectroscopy on a quantum wire L. N. Pfeiffer and K. W. West Keywords Vol. 101, Nos 1-12 Contents VOLUME 101, NUMBER 2 (Published 29 November 1996) CONTENTS Ill Publisher’s Announcement 83 Frank Isakson Prize D. E. Aspnes 85 Real-time optical analysis and control of semiconductor epitaxy: progress and opportunity M. Patrini, G. Guizzetti, M. Galli, R. Ferrini, 93 Optical functions of bulk and epitaxial GaSb from 0.0025 to 6 eV A. Bosacchi, S. Franchi and R. Magnanini K. Narushima and I. Shiozaki 99 Electronic properties of low-dimensional oxides Te,Mo,,0,, and VMoO, F. Plentz, D. Heiman, A. Pinczuk, L. N. Pfeiffer Electron—hole separation in a two-dimensional electron system and K. W. West induced by electric fields C. H. Kim, H. L. Park and S.-i. Mho Photoluminescence of Eu**+ and Bi** in Na;YSi,O, S. Hazra, A. R. Middya and S. Ray Stability of low bandgap a-Si:H prepared by conventional plasma enhanced chemical vapor deposition B. R. Jovani¢, B. Radenkovié and Lj. D. Zekovié Effect of hydrostatic pressure on fluorescence lifetime for 0-0 line (3D o—’Fo transition) in SrFCl:Sm?+ Y.-L. Li, J.-H. Xu, D.-G. Zheng, J.-K. Yang, Synthesis and characterization of stable nitroxides based on C.-Y. Pan and D.-B. Zhu fullerenes (Cgo,C79 ) and their magnetic study W.T. Fu, H. C. F. Martens and W. J. A. Maaskant Transport properties of the Ce-doped Ba(Pb,Bi)O; system Q. M. Zhang, H. M. Shao, Y. N. Huang, Internal friction and lattice anomalies of single-phase Hg-1 2 2 3 H. M. Shen and Y. N. Wang A. Das, R. Suryanarayanan and B. Dabrowski Erratum: Enhancement of T, in Y, _ ,Pr,Sr,CgRueg, 2 , , , (z ~ 1; x = 0,0.75) due to the elevated oxygen pressure annealing Keywords VOLUME 101, NUMBER 3 (Published 6 December 1996) CONTENTS Publisher’s Announcement A. Simon, M. Takesada, K. Weishaupt, High pressure Brillouin scattering study of ammonium M. Gelfand, A. Onodera and H. D. Hochheimer fluorberyllate Sk. Mohammad Yusuf, L. Madhav Rao, Low temperature magnetic phase of KMnFeF,: a neutron R. Mukhopadhyay, S. Giri, K. Ghoshray and depolarisation and diffraction study A. Ghoshray A. Nader, A. Briggs and Y. Gotoh Superconductivity in the misfit layer compounds (BiSe),j o (NbSe,) and (BiS),, ,;( NbS,) C. Tien, K. J. Lin and J. S. Hwang Magnetic properties and crystal-field effects in SmCuAl, J. Marcon, S. Gautier, S. Koumetz, K. Ketata, p-Type diffusion in InGaAs epitaxial layers using two models: a M. Ketata and P. Launay concentration dependent diffusivity and a point defect nonequilibrium B. Mihailova and L. Konstantinov Dependence of vibrational spectra of rings of SiO, tetrahedra on their structural parameters Vol. 101, Nos 1-12 Contents R. Lévenich, K. Victor, G. Bartels, A. Stahl, 167 The resonant interband contribution to the TEOS signal A Miler, P. Haring-Bolivar, T. Dekorsy and H. Kurz G. C. Kim and Y. C. Kim Flux pinning and the irreversibility line in the grain aligned HgBa,Ca,Cu,O, superconductor P. K. Sinharoy, S. K. De and S. Chatterjee Electronic properties of paramagnetic and ferromagnetic phases of PrAg D. I. Aladashvili, Z. A.A damia and Travelling electrical domains in hopping conductivity range E. L. Tzakadze S. Aasland, H. Fjellvag and B. Hauback Magnetic properties of the one-dimensional Ca,Co,0, Shu-Qing Bao Second-order Green’s function study of a spin-1 antiferromagnet- ic chain R. Briiggemann Analysis of the photoconductive decay from a trapping perspective N. Bouarissa and H. Aourag The disorder effect on the electron and positron structure in the semiconductor alloy In,Ga,_,Sb D. Richards, J. Wagner and J. Schmitz ERRATUM: Landau damped intersubband plasmons_ in InAs/AISb quantum wells Keywords VOLUME 101, NUMBER 4 (Published 13 December 1996) CONTENTS Il Publisher’s Announcement T. Mori and S. Ikehata 213 ESR study on potassium doped pentacene Y. J. Park, T. H. Yeom, I.-W. Park, S. H. Choh 219 Compensation center of Cr3+ in GaAs codoped with Cr and In for and S.-K. Min obtaining a semi-insulating property H. Hirose, G. Mizutani, S. Ushioda, Y. Yamazaki 225 Raman study of the effect of intense laser irradiation on and M. Miyake graphitized mesophase spherules T. Kawamoto 231 A theoretical model for ferromagnetism of TDAE-C,, A. Jayaraman, S. K. Sharma, Z. Wang and 237 Pressure-induced amorphization in the a-phase of Nd, (MoQ,), S. Y. Wang and Tb, (MoQ,), J. J. MareS, J. KriStofik and P. Hubik 243 Low-field magnetoresistance anomaly in two-dimensional electron gas J. Mertsching and B. Starke 249 Optical conductivity of polyacetylene chains G.-S. Tian 253 The effect of a crystalline field on the supersolid ordering in a fermion system J.-X. Zhu, Z. D. Wang and C.-D. Gong 257 Hole tunneling through highly transparent symmetric double-barrier semiconductor structures J. S. Zhu, X. M. Lu, P. Li, W. Jiang and 263 Stress effects in ferroelectric thin films Y. N. Wang G. Qin 267 Coulomb drag of coupled cylindrical quantum wells in magnetic field P. Onnerud, Y. Andersson, R. Tellgren and 271 The ferromagnetic structure of hexagonal (Fe,_,Co,),As P. Nordblad vi Vol. 101, Nos 1-12 Contents A. Maignan, C. Michel, M. Hervieu and B. Raveau 277 A monoclinic manganite, Lay MnO,5 , with colossal magnetoresistance properties near room temperature S. K. Deb, N. Mathur, A. P. Roy, S. Banerjee and 283 Raman scattering study of microstructure of n-type porous silicon A. Sardesai Y. Q. Wang, Y. S. Xiong, L. Yi and K. L. Yao 289 The magnetic correlation between organic radicals in a quasi-one-dimensional organic ferromagnet G. Lanzani, R. E. Benner and Z. V. Vardeny 295 Picosecond dynamics of nonequilibrium phonons in trans-polyacetylene studied by transient photoinduced resonance Raman scattering C. Tanguy Erratum: Coulomb corrections to the induced gain in the optical Stark effect of semiconductors Author Index Keywords VOLUME 101, NUMBER 5 (Published 27 December 1996) CONTENTS lil Publisher’s Announcement V. M. Fomin, V. R. Misko; J. T. Devreese and 303 On the superconducting phase boundary for a mesoscopic square V. V. Moshchalkov loop S. Ozdemir and R. A. Siileymanov 309 Effect of illumination on commensurate—incommensurate phase transition temperature in layered semiconductor TlInS, E. Benson, E. Fortin and A. Mysyrowicz Anomalous exciton transport in Cu,O: excitonic superfluidity or phonon-wind effect? J. F. Willart, L. Carpentier, M. Descamps, The low temperature symmetry change of C,: a high resolution H. G. Krane and J. L. Sauvajol X-ray diffraction investigation W. H. Lee and H. K. Zeng Superconductivity in the series (La,_,Th,) NiC, (0 < x < 0.8) E. Ribeiro, F. Cerdeira and O. Teschke Tridimension structural characterization of porous silicon by transmission electron microscopy and Raman scattering Z. K. Tang, M. M. T. Loy, T. Goto, J. Chen and Polarized Raman spectra of Se chains isolated in channels of R. Xu AIPO,-5 single crystal K. -D. Tsuei and P. D. Johnson Charge transfer and a new image state of C,, on Cu(111) surface studied by inverse photoemission J. M. Wesselinowa, and A. T. Apostolov On the origin of the central peak in hydrogen-bonded ferroelectrics A. K. Bakhshi, Deepika and J. Ladik Ab initio study of the electronic structures of polycyclopentadithiophene-4-one and polydicyanomethylene- cyclopentadithiophene: two conjugated polymers with small band gaps H. Li and N.-B. Ming 351 Significance of many-body interactions in Monte Carlo simulation of crystal—vapour interface Y. Okuno and H. Fukutome 355 A model for the electronic structures of B- and K- (BEDT-TTF),X A. Nossov, J. Pierre, V. Vassiliev and V. Ustinov 361 Influence of annealing conditions on the magnetoresistance of (La—Y—Ca) manganites A. K. Pradhan, B. K. Roul, S. B. Roy, P. Chaddah, 367 Effects of grain boundaries and columnar defects on magnetic D. Kanjilal, C. Chen and B. M. Wanklyn hysteresis of Bi,Sr,CaCu,O, , , crystals Vol. 101, Nos 1-12 Contents Vil W. Chen, Z. G. Wang, Z. J. Lin and L. Y. Lin 371 New observation on the luminescence of CdS clusters in zeolite-Y I. I. Burlakov, Y. Raptis, V. V. Ursaki, 377 Order—disorder phase transition in CdAI,S, under hydrostatic E. Anastassakis and I. M. Tiginyanu pressure A. Papageorgopoulos 383 Deposition of sulfur on Si(100)2 x 1: surface restoration M. Shiloh, K. Zhang, R. Mogilevsky and D. G. 389 Seebeck coefficient of poly and single crystals of Lay_,St,) CuO, Hinks Keywords FEBRUARY VOLUME 101, NUMBER 6 (Published 10 January 1997) CONTENTS III Publisher’s Announcement E. G. Maksimov, D. A. Shport and O. V. Ivanov 393 Microscopical calculations of lattice dynamics of ionic crystals and its dependence on the pressure V.G. Abramishvily, A. V. Komarov, 397 Carrier-ion exchange interactions in crystals Cd,_,Co,Te S. M. Ryabchenko, A. I. Savchuk and Yu. G. Semenov A. I. Gusarov and A. O. Volchek Scaling for relaxation rates spectra and local configurational entropy in the hierarchically constrained dynamic model of glassy relaxation W. G. Zeng, C. C. Lam, Y. L. Lao, J. Feng and The behaviour of damping motion of domain walls in E. C. L. Fu (BiTm),(FeGa),O,, thin film M.R iccd, M. Bisbiglia, R. De Renzi and Observation of superconductivity in TDAE-C,, F. Bolzoni D.-K. Seo, M.-H. Whangbo and Electronic band structure study of colossal magnetoresistance in M. A. Subramanian Tl,Mn,O, S. Jaswani, P. Sen and P. K. Sen Pulse propagation effects in bulk InSb crystal I.-K. Yu and K. Tanimura Laser-induced desorption of adatoms on Si(100)-2x1 surface P. Onnerud, Y. Andersson, R. Tellgren, The crystal and magnetic structures of ordered cubic Pd;MnDo 7 P. Nordblad, F. Bourée and G. André C. Long, Y. Xu, C. Zhu and D. Zhu TEM study on Langmuir—Blodgett films of two novel Ceo derivatives Z. H. Mai, H. X. Guo, W. C. Chen, G. M. Luo, Physical and chemical properties of a-LilO; single crystal grown Y.R. Wu, G. J. Zhai, C. Y. Wang and Y. Zhu in space S. K. Tiwary and S. Vasudevan Single crystal magnetic susceptibility of the quasi-one- dimensional antiferromagnet KFeS, R. Seshadri, A. Maignan, M. Hervieu, N. Nguyen Complex magnetotransport‘in LaSr,Mn,O, and B. Raveau G. Busiello, R. V. Saburova and F. Vagapova Anomalous echoes in quantum systems F. Guerrero, J. J. Portelles, I. Gonzélez, Dielectric properties of the La3+ doped Sto 3 3,,La,Bap 7Nb,0, A. Fundora, H. Amorin, J. M. Siqueiros and ceramic system R. Machorro J. Xu, J. Zhang, W. Ding, W. Yang, Y. Du, Optical properties of Zn fine particles coated with ZnO and/or ZnS J. Zuo, C. Xu, Y. Zhang and Z. Du J. A. Giiida, O. E. Piro, P. S. Schaiquevich Infrared absorption spectra of electronically excited long-lived and P. J. Aymonino metastable states in Na,[Ru(CN),NO]-2H,O Keywords Vill Vol. 101, Nos 1-12 Contents FEBRUARY VOLUME 101, NUMBER 7 (Published 17 January 1997) CONTENTS Ill Publisher’s Announcement P. Dawson, P. Buckle, M. J. Godfrey, 477 Observation of resonant exciton cooling GaAs/AlGaAs multiple W. H. Roepke and M. Halsall quantum well structures O. F. Panchenko and L. K. Panchenko 483 Low-energy secondary electron spectroscopy of Ge (111) surface T. Dahm 487 Temperature dependence of the superconducting order parameter in the flex-approximation for the Hubbard model M. Marvan and A. Havranek 493 Static volume flexoelectric effect in a model of linear chains V. A. Kosobukin 497 Surface-enhanced magneto-optical effects in ferromagnetic superlattices T. Nakamura, K. Oka, H. Naito, M. Okuda, 503 Effect of molecular weight on hole transport in polysilanes Y. Nakayama and T. Dohmaru A. I. Grachev and I. V. Pleshakov 507 Pyroelectric voltages in YBCO thin films S. K. O’Leary and P. K. Lim 513 The influence of the distribution of potential fluctuations on the distribution of states in amorphous semiconductors C. Wolverton, A. Zunger and B. Schénfeld 519 Invertible and non-invertible alloy Ising problems J. M. Monsterleet, B. Capoen and G. Biskupski 525 Negative magnetoresistance in insulating n-type GaAs and localized magnetic moments T. M. Kim, S. H. Lee and H. L. Park 531 Tunneling effects in Cdo.4Zny7,Te/ZnTe asymmetric double quantum wells J. Jiang, J. Dong and D. Y. Xing 537 Exciton effects on the optical properties of the substituted fullerenes C5)X (X = B, N) , K. G. Efthimiadis, C. A. Achilleos, 541 Study of the crystallization of amorphous Fe7,Si,B,, and S. C. Chadjivasiliou and I. A. Tsoukalas Fe7,5i,B,, by means of magnetic measurements G. Petrakovskii, K. Sablina, A. Vorotinov, 545 The magnetostriction of CuGeO, I. Krynetskii, A. Bogdanov, H. Szymczak and L. Gladczuk Keywords FEBRUARY VOLUME 101, NUMBER 8 (Published 24 January 1997) CONTENTS Publisher’s Announcement K. Tsemekhman, V. Tsemekhman, C. Wexler and 549 Quantum Hall Effect: current distribution and the role D. J. Thouless of measurement C. F. Cornwell and L. T. Wille 555 Elastic properties of single-walled carbon nanotubes in compression V. S. Stepanyuk, W. Hergert, P. Rennert, 559 Metamagnetic states in metallic nanostructures K. Wildberger, R. Zeller and P. H. Dederichs H. Hild, J. U. von Schiitz and H. Wachtel 563 Effect of tensile stress on the phase transitioni n Cu(2,5-dimethyl- N,N’-dicyanoquinonediimine),—correlation of crystal length and conductivity Vol. 101, Nos 1-12 Contents 1X K. Cornell, H. Wipf, U. Stuhr and A. V. Skripov 569 A neutron diffraction study of the interstitial sites of deuterium in the A-15 compound Ti,Ir M. F. Lépez, A. Gutiérrez, M. C. Garcia-Alonso 575 Synchrotron radiation photoemission study of the passive layers of and M. L. Escudero heat treated Fe,Al-type alloy C. Juang, C. B. Tsai and J. Juang 581 Chaotic behavior of hole mixing tunneling in asymmetric coupled quantum wells M. B. Derbali J. Meddeb, H. Maaref and 585 Optical properties of InP epilayers grown on (111)B GaP P. Abraham substrates by metalorganic chemical vapor deposition Z. Jaglici¢, Z. Trontelj, J. Luznik, J. Pirnat and 591 Magnetic properties of TDAE-C,, single crystal and powder R. Blinc samples: the influence of thermal annealing F. Castelpoggi, L. Morelli, H. R. Salva, 597 Specific heat measurement of the magnetoresistant perovskite S. L. Cuffini, R. Carbonio and R. D. Sanchez SrRuO, R. Tamura and M. Tsukada 601 Electronic transport in carbon nanotube junctions A. C. Alonzo, D. A. Collins and T. C. McGill 607 Tunneling spectroscopy of resonant interband tunneling structures P. G. Baranov, I. V. Ilyin and E. N. Mokhov 611 Identification of iron transition group trace impurities in GaN bulk crystals by electron paramagnetic resonance S. Banerjee and B. K. Chaudhuri 617 Study of normalised resistance and thermopower of a hole doped Bi,_,Cd,Sr,CaCu,0,(x=0.0-0.8) superconducting system - T. Maniv, A. Y. Rom, I. D. Vagner and P. Wyder 621 Order parameter induced phase shift in the dHvA oscillations in type-II superconductors S. M. M. R. Naqvi, S. Dabir, H. Rizvi, S. Mohsin 627 Study of nucleus size with iron content in iron—zirconium LQA Raza, M. A. Gormani and S. Rizvi alloys at relatively high temperatures S. Baran, J. Leciejewicz, N. Stiisser, A. Szytuta 631 Incommensurate—commensurate magnetic phase transition in and Z. Tomkowicz TbCuSn J. Hu, L.-M. Mei, H. Li, Z. Liu, J.-L. Wang and Investigation of *’Fe Méssbauer spectra of YFe,,._,Co,Si,(x = 0, 2 Q. Lin and 6) compounds J. H. Zhou and C. Z. Yang Curie temperature of a ferroelectric superlattice described by the transverse Ising model Author Index Keywords VOLUME 101, NUMBER 9 (Published 5 February 1997) CONTENTS D. C. Reynolds, D. C. Look, B. Jogai and 643 Similarities in the bandedge and deep-centre photoluminescence H. Morkog mechanisms of ZnO and GaN N. Onoda-Yamamuro, R. Ikeda, O. Yamamuro and 647 Methylammonium aluminum chloride hydrate: its chemical T. Matsuo composition and phase transitions Z. Tylezyriski and B. Mréz 653 The influence of uniaxial stress on ultrasonic wave propagation in ferroelastic (NH,),LiH;(SO,), J. Tempere and J. T. Devreese 657 Canonical Bose-Einstein condensation of interacting bosons in two dimensions J. Tempere, V. M. Fomin and J. T. Devreese 661 Bipolaron dispersion in anisotropic high-7, superconductors: relevance to neutron scattering M. Gusso, L. De Caro and L. Tapfer 665 Elastic lattice deformation and piezoelectric fields in wurtzite type II-VI semiconductor heterostructures X Vol. 101, Nos 1-12 Contents M. Cini and A. Balzarotti 671 Symmetry-induced correlation effects and hole pairing in the Cu,O, model cluster J. C. Lasjaunias, P. Monceau, G. Reményi, 677 Heat capacity of CuGeO,;: sensitivity to crystalline quality S. Sahling, G. Dhalenne and A. Revcolevschi E. F. Hairetdinov, N. F. Uvarov, M. Wahbi and 681 Clustering and anionic mobility inside the Sr,_,.Bi,F,,, solid J. M. Reau solution W. F. Miao, P. G. McCormick and R. Street 687 High magnetic performance in a two-phase NdDyFeCoB alloy P. C. Morais, A. L. Tronconi, F. A. Tourinho and 693 Investigation of the Brownian relaxation and hydrodynamic radius F. Pelegrini in magnetic nanoparticles M. El Hafidi, J. M. Louis, G. Chouteau, P. Biensan 699 Anomalous high field magnetic properties of a third stage CrCl, and S. Flandrois graphite intercalation compound and induced magnetism in the ternary layered compound C,,CrCl,(MnCl,), M.-S. Lee, E. K. Kim, S.-I. Kim, S.-M. Hwang, InGaAs layer effect on the growth of AlGaAs/GaAs quantum C. K. Kim, S.-K. Min and J. Y. Lee wires on V-grooved InGaAs/GaAs substrates V.H. Tran, Z. Zolnierek, A. J. Zaleski and H. Noél A.C.-magnetic susceptibility study of U,T,M (T = Ni, Rh, Pd, Ir and Pt, M = In or Sn) Y. L. Luo, T. P. Chen, S. Fung and C. D. Beling Reverse I-V characteristics of Au/semi-insulating GaAs(1 0 0) A. P. Mirgorodsky, M. F. Limonov and Structural instabilities of YBa,Cu,O,_; lattices under hydrostatic H. Lichtenstern compression Keywords VOLUME 101, NUMBER 10 (Published 10 February 1997) CONTENTS Y. Tanaka, H. Yamazaki and K. Katsumata 727 Magnetic properties of Er,o9 _,Tb,/Y superlattices Y.S. Joe and R. M. Cosby 731 Effects of tunneling through coupled series attractors in a mesoscopic system K. G. Nakamura, K. Ishioka, M. Kitajima and 735 Ab initio calculation of the hydrogen molecule in silicon K. Murakami K. Ono, A. Kakizaki, K. Tanaka, K. Shimada, 739 Resonant enhancement of valence band satellites of Ni: a Y. Saitoh and T. Sendohda spin-resolved photoemission study Z. P. Guan, B. Ullrich, Q. B. Zheng and 743 Excitonic emission enhancement by directional carrier injection in T. Kobayashi a ZnSe/Zng 7gCdp >,Se multi-superlattice I. Gorczyca, A. Svane and N. E. Christensen 747 Calculated defect levels in GaN and AIN and their pressure coefficients C. Bechinger, M. S. Burdis and J.-G. Zhang 753 Comparison between electrochromic and photochromic coloration efficiency of tungsten oxide thin films F. Alsina, M. Garriga, M. I. Alonso, S. Tortosa, 757 Optical determination of growth variants in ordered GalnP J. Pascual, C. Geng, F. Scholz and R. W. Glew T. Puig, M. Pont, F. de la Cruz, P. G. Huggard, 761 Laser induced nanosecond flux motion in YBa,Cu,O, _ , films W. Prettl and J. S. Mujfioz L. I. Zawislak, V. Antonietti, J. B.M . da Cunha 767 Cation ordering observed on (Mp ggFe€p 99)(Tap.g6Nbo.14)20¢: a and C. A. dos Santos Mossbauer and X-ray study Y. B. Jia and H. G. Grimmeiss 771 Electron capture properties of multi-DX levels in Si doped AlGaAs