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ARTICLES

•	Nonperturbative approach to the Newns-Anderson model of chemisorption Henry L. Neal pp. 2725-2727 [View Page Images , PDF (333 kB), or Buy this Article (Use Article Pack) ]

•	Temperature and magnetic field dependence of the two-dimensional conductivity in AuxSi1-x/Si and Cu/Si multilayers A. Audouard, A. Kazoun, J. M. Broto, G. Marchal, and A. Fert pp. 2728-2734 [View Page Images , PDF (1016 kB), or Buy this Article (Use Article Pack) ]

•	Conductance fluctuations and 1/f noise in Bi Norman O. Birge, Brage Golding, and W. H. Haemmerle pp. 2735-2743 [View Page Images , PDF (1712 kB), or Buy this Article (Use Article Pack) ]

•	Theoretical study of the magnetic x-ray dichroism of Os, Ir, Pt, and Au impurities in Fe H. Ebert and R. Zeller pp. 2744-2751 [View Page Images , PDF (1452 kB), or Buy this Article (Use Article Pack) ]

•	Metallization pressure for NaCl in the B2 structure J. L. Feldman, B. M. Klein, M. J. Mehl, and H. Krakauer pp. 2752-2760 [View Page Images , PDF (1541 kB), or Buy this Article (Use Article Pack) ]

•	Electronic structure of ordered and disordered Cu alloys: Cu3Pd, Cu3Pt, and Cu3Au B. Ginatempo, G. Y. Guo, W. M. Temmerman, J. B. Staunton, and P. J. Durham pp. 2761-2767 [View Page Images , PDF (1140 kB), or Buy this Article (Use Article Pack) ]

•	Charge-distribution changes accompanying the formation and changes in the composition of HfCx and TaCx G. R. Gruzalski and D. M. Zehner pp. 2768-2777 [View Page Images , PDF (1648 kB), or Buy this Article (Use Article Pack) ]

•	Stiffness reduction associated with charge-density-wave sliding: Temperature and bias dependences in TaS3 Ronald L. Jacobsen and George Mozurkewich pp. 2778-2784 [View Page Images , PDF (1117 kB), or Buy this Article (Use Article Pack) ]

•	Picosecond vibrational relaxation modulated by critical slowing down in ferroelectric K4Fe(CN)6⋅3H2O Ron Kroon, Rudolf Sprik, and Ad Lagendijk pp. 2785-2791 [View Page Images , PDF (1092 kB), or Buy this Article (Use Article Pack) ]

•	Interfacial stiffening of Cu, Ni, and Ag thin films on the Ru(0001) surface David G. O’Neill and J. E. Houston pp. 2792-2800 [View Page Images , PDF (1800 kB), or Buy this Article (Use Article Pack) ]

•	Applicability of the Rayleigh hypothesis to real materials Thomas C. Paulick pp. 2801-2824 [View Page Images , PDF (3284 kB), or Buy this Article (Use Article Pack) ]

•	Further evidence for the coexistence of localized and extended states in atomically and electronically disordered solids J. C. Phillips pp. 2825-2830 [View Page Images , PDF (1206 kB), or Buy this Article (Use Article Pack) ]

•	Transport and microwave properties of the metal-spine conductor Co(phthalocyaninato)I G. Quirion, M. Poirier, M. Castonguay, K. K. Liou, and B. M. Hoffman pp. 2831-2834 [View Page Images , PDF (765 kB), or Buy this Article (Use Article Pack) ]

•	Surface-plasmon spectrum of Ag(001) measured by high-resolution angle-resolved electron-energy-loss spectroscopy M. Rocca, F. Biggio, and U. Valbusa pp. 2835-2841 [View Page Images , PDF (962 kB), or Buy this Article (Use Article Pack) ]

•	Femtosecond carrier dynamics in graphite K. Seibert, G. C. Cho, W. Kütt, H. Kurz, D. H. Reitze, J. I. Dadap, H. Ahn, M. C. Downer, and A. M. Malvezzi pp. 2842-2851 [View Page Images , PDF (1872 kB), or Buy this Article (Use Article Pack) ]

•	Analysis of the reconstructed Ir(110) surface from time-of-flight scattering and recoiling spectrometry M. Shi, H. Bu, and J. W. Rabalais pp. 2852-2863 [View Page Images , PDF (2099 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Mean-square displacements of surface atoms: c(2×2) overlayers on Ni(100) Liqiu Yang, Talat S. Rahman, and D. L. Mills pp. 2864-2873 [View Page Images , PDF (1760 kB), or Buy this Article (Use Article Pack) ]

•	Ferromagnetic properties of Pd monolayers Ming J. Zhu, D. M. Bylander, and Leonard Kleinman pp. 2874-2877 [View Page Images , PDF (683 kB), or Buy this Article (Use Article Pack) ]

•	Interface formation with ions and neutral atoms C. M. Aldao, D. J. Aastuen, M. Vos, I. M. Vitomirov, G. D. Waddill, P. J. Benning, and J. H. Weaver pp. 2878-2885 [View Page Images , PDF (1531 kB), or Buy this Article (Use Article Pack) ]

•	Electronic and optical properties of a superlattice in a parabolic potential L. Brey, N. F. Johnson, and Jed Dempsey pp. 2886-2892 [View Page Images , PDF (1210 kB), or Buy this Article (Use Article Pack) ]

•	Radiative recombination processes of the many-body states in multiple quantum wells R. Cingolani, K. Ploog, A. Cingolani, C. Moro, and M. Ferrara pp. 2893-2903 [View Page Images , PDF (1943 kB), or Buy this Article (Use Article Pack) ]

•	Metal-semiconductor interfaces: Magnetic and electronic properties and Schottky barrier in Fen/(ZnSe)m (001) superlattices A. Continenza, S. Massidda, and A. J. Freeman pp. 2904-2913 [View Page Images , PDF (1884 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Computer simulation studies of the growth of strained layers by molecular-beam epitaxy D. A. Faux, G. Gaynor, C. L. Carson, C. K. Hall, and J. Bernholc pp. 2914-2922 [View Page Images , PDF (1747 kB), or Buy this Article (Use Article Pack) ]

•	Elastic properties of GaAs/AlAs superlattices M. Grimsditch, R. Bhadra, Ivan K. Schuller, F. Chambers, and G. Devane pp. 2923-2925 [View Page Images , PDF (461 kB), or Buy this Article (Use Article Pack) ]

•	Pressure dependence of photoluminescence in InxGa1-xAs/GaAs strained quantum wells H. Q. Hou, L. J. Wang, R. M. Tang, and J. M. Zhou pp. 2926-2931 [View Page Images , PDF (1057 kB), or Buy this Article (Use Article Pack) ]

•	Temperature dependence of the direct energy gap in a GaAs/AlAs superlattice J. Humlek, F. Luke, and K. Ploog pp. 2932-2936 [View Page Images , PDF (893 kB), or Buy this Article (Use Article Pack) ]

•	Ga 3d excitons at surfaces and interfaces M. B. Jost, T. J. Wagener, Y.-J. Hu, and J. H. Weaver pp. 2937-2940 [View Page Images , PDF (714 kB), or Buy this Article (Use Article Pack) ]

•	Localization of two-dimensional exciton polaritons M. Kohl, D. Heitmann, P. Grambow, and K. Ploog pp. 2941-2950 [View Page Images , PDF (1920 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Tilted-magnetic-field measurements of activation energies and cyclotron resonance for AlxGa1-xAs-GaAs heterojunctions J. J. Koning, R. J. Haug, H. Sigg, K. von Klitzing, and G. Weimann pp. 2951-2958 [View Page Images , PDF (1335 kB), or Buy this Article (Use Article Pack) ]

•	Optical properties of Wannier excitons in the linear and weakly nonlinear regime Jan R. Kuklinski and Shaul Mukamel pp. 2959-2976 [View Page Images , PDF (3026 kB), or Buy this Article (Use Article Pack) ]

•	Phonon-mediated excitonic optical bistability in polymers X. S. Li, D. L. Lin, Thomas F. George, and X. Sun pp. 2977-2981 [View Page Images , PDF (815 kB), or Buy this Article (Use Article Pack) ]

•	Electronic properties of nascent GaP(110)–noble-metal interfaces R. Ludeke, A. B. McLean, and A. Taleb-Ibrahimi pp. 2982-2995 [View Page Images , PDF (2332 kB), or Buy this Article (Use Article Pack) ]

•	Partial densities of states for silver bromide and silver iodobromide M. G. Mason, Y. T. Tan, T. J. Miller, G. N. Kwawer, F. C. Brown, and A. B. Kunz pp. 2996-3003 [View Page Images , PDF (1451 kB), or Buy this Article (Use Article Pack) ]

•	Subnanosecond transient photoconductivity in poly(3-hexylthiophene) G. Yu, S. D. Phillips, H. Tomozawa, and A. J. Heeger pp. 3004-3010 [View Page Images , PDF (1278 kB), or Buy this Article (Use Article Pack) ]

•	Picosecond photoinduced absorption and polarization memory in polythiophene derivatives D. McBranch, A. Hays, M. Sinclair, D. Moses, and A. J. Heeger pp. 3011-3016 [View Page Images , PDF (1075 kB), or Buy this Article (Use Article Pack) ]

•	Morphology and barrier-height development of Bi/InP(110) interfaces K. E. Miyano, T. Kendelewicz, R. Cao, C. J. Spindt, I. Lindau, W. E. Spicer, and J. C. Woicik pp. 3017-3023 [View Page Images , PDF (1341 kB), or Buy this Article (Use Article Pack) ]

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Evolution of the electronic states of coupled (In,Ga)As-GaAs quantum wells into superlattice minibands Karen J. Moore, Geoffrey Duggan, Karl Woodbridge, Christine Roberts, Nicolas J. Pulsford, and Robin J. Nicholas pp. 3024-3029 [View Page Images , PDF (1107 kB), or Buy this Article (Use Article Pack) ]

•	Band offsets in pseudomorphically grown Si/Si1-xGex heterostructures studied with core-level x-ray photoelectron spectroscopy Wei-Xin Ni and Göran V. Hansson pp. 3030-3037 [View Page Images , PDF (1620 kB), or Buy this Article (Use Article Pack) ]

•	Al 2p core exciton in AlxGa1-xAs Jeyasingh Nithianandam and Stephen E. Schnatterly pp. 3038-3043 [View Page Images , PDF (895 kB), or Buy this Article (Use Article Pack) ]

•	Calculations of the electronic structure of highly strained GaAs/GaSb/GaAs heterostructures A. Qteish and R. J. Needs pp. 3044-3051 [View Page Images , PDF (1539 kB), or Buy this Article (Use Article Pack) ]

•	Theoretical study of muon-induced solitons in polyacetylene B. K. Rao, P. Jena, and J. A. Darsey pp. 3052-3056 [View Page Images , PDF (847 kB), or Buy this Article (Use Article Pack) ]

•	Influence of film and deposition parameters on the electrical conduction in CdSexTe1-x thin films P. J. Sebastian and V. Sivaramakrishnan pp. 3057-3063 [View Page Images , PDF (899 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Electronic structure of an InAs monomolecular plane in GaAs Kenji Shiraishi and Eiichi Yamaguchi pp. 3064-3068 [View Page Images , PDF (858 kB), or Buy this Article (Use Article Pack) ]

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Excitation mechanisms of photoluminescence in double-barrier resonant-tunneling structures M. S. Skolnick, P. E. Simmonds, D. G. Hayes, A. W. Higgs, G. W. Smith, A. D. Pitt, C. R. Whitehouse, H. J. Hutchinson, C. R. White, L. Eaves, M. Henini, and O. H. Hughes pp. 3069-3076 [View Page Images , PDF (1627 kB), or Buy this Article (Use Article Pack) ]

•	Phonon-assisted cyclotron resonance in n-type quantum-well structures B. Tanatar and M. Singh pp. 3077-3081 [View Page Images , PDF (768 kB), or Buy this Article (Use Article Pack) ]

•	Raman scattering in a superlattice under an electric field Hui Tang, Bangfen Zhu, and Kun Huang pp. 3082-3086 [View Page Images , PDF (811 kB), or Buy this Article (Use Article Pack) ]

•	Probability-density-function description of mesoscopic normal tunnel junctions Masahito Ueda pp. 3087-3099 [View Page Images , PDF (1816 kB), or Buy this Article (Use Article Pack) ]

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Comparison and spatial profiling of strain in [001]- and [111]-oriented InxGa1-xAs/GaAs superlattices from Raman and x-ray experiments U. D. Venkateswaran, T. Burnett, L. J. Cui, M. Li, B. A. Weinstein, H. M. Kim, C. R. Wie, K. Elcess, C. G. Fonstad, and C. Mailhiot pp. 3100-3108 [View Page Images , PDF (1629 kB), or Buy this Article (Use Article Pack) ]

•	Strain-induced quantum confinement of carriers due to extended defects in silicon H. Weman, B. Monemar, G. S. Oehrlein, and S. J. Jeng pp. 3109-3112 [View Page Images , PDF (795 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

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Hydrostatic pressure coefficients of the photoluminescence of InxGa1-xAs/GaAs strained-layer quantum wells V. A. Wilkinson, A. D. Prins, J. D. Lambkin, E. P. O’Reilly, D. J. Dunstan, L. K. Howard, and M. T. Emeny pp. 3113-3119 [View Page Images , PDF (1242 kB), or Buy this Article (Use Article Pack) ]

•	Impurity incorporation and doping efficiency in a-Si:H K. Winer, R. A. Street, N. M. Johnson, and J. Walker pp. 3120-3128 [View Page Images , PDF (1438 kB), or Buy this Article (Use Article Pack) ]

•	Polarizabilities of shallow donors in quantum wells M. El-Said and M. Tomak pp. 3129-3131 [View Page Images , PDF (351 kB), or Buy this Article (Use Article Pack) ]

•	Polarizabilities of shallow donors in finite-barrier quantum wells K. F. Ilaiwi and M. Tomak pp. 3132-3134 [View Page Images , PDF (332 kB), or Buy this Article (Use Article Pack) ]

•	Cell-cluster and self-consistent calculations for a model sodium chloride crystal E. Roger Cowley, J. Gross, Zhaoxin Gong, and G. K. Horton pp. 3135-3141 [View Page Images , PDF (1099 kB), or Buy this Article (Use Article Pack) ]

•	EPR study of hole trapping at cation vacancies in silver halides Chien-teh Kao, L. G. Rowan, and L. M. Slifkin pp. 3142-3151 [View Page Images , PDF (1948 kB), or Buy this Article (Use Article Pack) ]

•	X-ray-diffraction study of the crystal structures and orientational glass state of Ar1-x(N2)x solid solutions H. Klee and K. Knorr pp. 3152-3163 [View Page Images , PDF (2142 kB), or Buy this Article (Use Article Pack) ]

BRIEF REPORTS

•	Raman scattering from VO2 single crystals: A study of the effects of surface oxidation J. C. Parker pp. 3164-3166 [View Page Images , PDF (444 kB), or Buy this Article (Use Article Pack) ]

•	Generalized renormalization-group calculation of x-ray photoemission spectra for a simple metal V. L. Lriaabero and L. N. Oliveira pp. 3167-3170 [View Page Images , PDF (560 kB), or Buy this Article (Use Article Pack) ]

•	Depolarization and metallization in alkali-metal overlayers B. N. Persson and H. Ishida pp. 3171-3174 [View Page Images , PDF (623 kB), or Buy this Article (Use Article Pack) ]

•	Vibrational frequencies of Si-P-H complexes in crystalline silicon: A theoretical study A. Amore Bonapasta, P. Giannozzi, and M. Capizzi pp. 3175-3178 [View Page Images , PDF (650 kB), or Buy this Article (Use Article Pack) ]

•	Observation of a metallic impurity band in n-type GaAs D. Romero, S. Liu, H. D. Drew, and K. Ploog pp. 3179-3182 [View Page Images , PDF (705 kB), or Buy this Article (Use Article Pack) ]

•	Proximity effect in the collective excitations of the fractional quantum Hall state Noam Sivan pp. 3183-3186 [View Page Images , PDF (537 kB), or Buy this Article (Use Article Pack) ]

•	Stress-induced switching of nonlinear optical properties of linear polymers Olle Heinonen pp. 3187-3189 [View Page Images , PDF (447 kB), or Buy this Article (Use Article Pack) ]

•	Temperature and volume dependence of the Raman spectrum of ammonia solid II R. K. Luo and F. D. Medina pp. 3190-3193 [View Page Images , PDF (490 kB), or Buy this Article (Use Article Pack) ]

ERRATA

•	Erratum: Energy-band dispersion in oriented thin films of pentatriacontan-18-one by angle-resolved photoemission with synchrotron radiation Nobuo Ueno, Kazuhiko Seki, Naoki Sato, Hitoshi Fujimoto, Tadao Kuramochi, Kazuyuki Sugita, and Hiroo Inokuchi pp. 3194 [View Page Images or PDF (79 kB) ]

•	Erratum: Small-crystal approach to ordered semiconductor compounds Belita Koiller, Maria A. Davidovich, and L. M. Falicov pp. 3194 [View Page Images or PDF (79 kB) ]

•	Erratum: Surface reconstructions of GaAs(100) observed by scanning tunneling microscopy D. K. Biegelsen, R. D. Bringans, J. E. Northrup, and L. -E. Swartz pp. 3195 [View Page Images , PDF (70 kB), or Figure Images ]

•	Erratum: Strain effects in chemically lifted GaAs thin films M. J. Joyce and J. M. Dell pp. 3195 [View Page Images or PDF (70 kB) ]

•	Erratum: Effective-mass approximation in semiconductor heterostructures: One-dimensional analysis [Phys. Rev. B 38, 12 493 (1988)] Witold Trzeciakowski pp. 3196 [View Page Images or PDF (24 kB) ]

RAPID COMMUNICATIONS

Magnetoresistance of very pure simple metals M. Büttiker pp. 3197-3200 [View Page Images , PDF (730 kB), or Buy this Article (Use Article Pack) ]

Simulated annealing of carbon clusters Pietro Ballone and Paolo Milani pp. 3201-3204 [View Page Images , PDF (715 kB), or Buy this Article (Use Article Pack) ]

Local-spin-density calculations for iron: Effect of spin interpolation on ground-state properties J. M. MacLaren, D. P. Clougherty, and R. C. Albers pp. 3205-3208 [View Page Images , PDF (608 kB), or Buy this Article (Use Article Pack) ]

Exciton localization in submonolayer InAs/GaAs multiple quantum wells R. Cingolani, O. Brandt, L. Tapfer, G. Scamarcio, G. C. La Rocca, and K. Ploog pp. 3209-3212 [View Page Images , PDF (717 kB), or Buy this Article (Use Article Pack) ]

Stability and band offsets of heterovalent superlattices: Si/GaP, Ge/GaAs, and Si/GaAs R. G. Dandrea, Sverre Froyen, and Alex Zunger pp. 3213-3216 [View Page Images , PDF (843 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

Possible observation of impurity effects on conductance quantization J. Faist, P. Guéret, and H. Rothuizen pp. 3217-3219 [View Page Images , PDF (537 kB), or Buy this Article (Use Article Pack) ]

Interface-roughness-controlled exciton mobilities in GaAs/ Al0.37Ga0.63As quantum wells H. Hillmer, A. Forchel, R. Sauer, and C. W. Tu pp. 3220-3223 [View Page Images , PDF (653 kB), or Buy this Article (Use Article Pack) ]

Fractional quantum Hall effect in a two-dimensional electron-hole fluid A. H. MacDonald and E. H. Rezayi pp. 3224-3227 [View Page Images , PDF (655 kB), or Buy this Article (Use Article Pack) ]

Synchrotron-radiation-induced surface photovoltage on GaAs studied by contact-potential-difference measurements D. Mao, A. Kahn, M. Marsi, and G. Margaritondo pp. 3228-3230 [View Page Images , PDF (622 kB), or Buy this Article (Use Article Pack) ]

Adsorption and interaction of Sm on GaAs(110) studied by scanning tunneling microscopy B. M. Trafas, D. M. Hill, R. L. Siefert, and J. H. Weaver pp. 3231-3234 [View Page Images , PDF (852 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

Resonant-Raman-scattering studies of disorder in solution-cast polydiacetylene films L. X. Zheng, R. E. Benner, Z. V. Vardeny, and G. L. Baker pp. 3235-3238 [View Page Images , PDF (700 kB), or Buy this Article (Use Article Pack) ]