Volume 54, Issue 12

15 September 1996

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RAPID COMMUNICATIONS

RAPID COMMUNICATION

Phase separation in the two-dimensional Hubbard model

Gang Su

Phys. Rev. B 54, R8281(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Analytic continuation of the dynamic response function using an $N$ -point Padé approximant

Keun-Ho Lee and K. J. Chang

Phys. Rev. B 54, R8285(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Magnetoresistance and magnetic breakdown in the quasi-two-dimensional conductors ${(B E D T - T T F)}_{2} M Hg {(SCN)}_{4} [M = K, R b, T l]$

Ross H. McKenzie, G. J. Athas, J. S. Brooks, R. G. Clark, A. S. Dzurak, R. Newbury, R. P. Starrett, A. Skougarevsky, M. Tokumoto, N. Kinoshita, T. Kinoshita, and Y. Tanaka

Phys. Rev. B 54, R8289(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Gradient-corrected ab initio calculations of spin-spiral states in fcc-Fe and the effects of the atomic-spheres approximation

M. Körling and J. Ergon

Phys. Rev. B 54, R8293(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Anomalous effective charges and far-IR optical absorption of ${Al}_{2}$ Ru from first principles

Serdar Öğüt and Karin M. Rabe

Phys. Rev. B 54, R8297(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Ultrafast high-energy luminescence in a high-electron-affinity conjugated polymer

G. R. Hayes, I. D. W. Samuel, and R. T. Phillips

Phys. Rev. B 54, R8301(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Coulomb enhancement of Faraday rotation in semimagnetic semiconductors

P. Leisching, R. Pankoke, C. Buss, R. Frey, C. Flytzanis, J. Cibert, and A. Wasiela

Phys. Rev. B 54, R8305(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Inequivalent atoms and imaging mechanisms in ac-mode atomic-force microscopy of Si(111)7×7

Ragnar Erlandsson, Lars Olsson, and Per Mårtensson

Phys. Rev. B 54, R8309(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Dimer bond geometry in D/Ge(100)-(2×1): A low-energy electron-diffraction structure analysis

S. Pflanz, R. Buchtler, W. Moritz, and H. Over

Phys. Rev. B 54, R8313(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Spin splitting in a polarized quasi-two-dimensional exciton gas

L. Viña, L. Muñoz, E. Pérez, J. Fernández-Rossier, C. Tejedor, and K. Ploog

Phys. Rev. B 54, R8317(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Anomalous features of resonant hyper-Raman scattering in CuBr quantum dots: Evidence of exciton-phonon-coupled states similar to molecules

K. Inoue, A. Yamanaka, K. Toba, A. V. Baranov, A. A. Onushchenko, and A. V. Fedorov

Phys. Rev. B 54, R8321(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Drift-velocity degradation caused by an electric field during collision in one-dimensional quantum wires

Nobuyuki Sano and Kenji Natori

Phys. Rev. B 54, R8325(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Experimental determination of $Γ - X$ intervalley transfer mechanisms in GaAs/AlAs heterostructures

R. Teissier, J. J. Finley, M. S. Skolnick, J. W. Cockburn, J. -L. Pelouard, R. Grey, G. Hill, M. A. Pate, and R. Planel

Phys. Rev. B 54, R8329(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Hierarchy of relaxation times in the system of Mn-ion spins in photoexcited semimagnetic quantum wells

V. D. Kulakovskii, M. G. Tyazhlov, A. I. Filin, D. R. Yakovlev, A. Waag, and G. Landwehr

Phys. Rev. B 54, R8333(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Anisotropic surface acoustic wave scattering in quantum-wire arrays

G. R. Nash, S. J. Bending, M. Boero, P. Grambow, K. Eberl, and Y. Kershaw

Phys. Rev. B 54, R8337(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Coulomb gaps in one-dimensional spin-polarized electron systems

Gun Sang Jeon, M. Y. Choi, and S. -R. Eric Yang

Phys. Rev. B 54, R8341(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Magnetic properties of the Skyrmion gas in two dimensions

J. P. Rodriguez

Phys. Rev. B 54, R8345(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Electronic spectral functions for quantum Hall edge states

U. Zülicke and A. H. MacDonald

Phys. Rev. B 54, R8349(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Electron-phonon heat transport in arrays of Al islands with submicrometer-sized tunnel junctions

J. P. Kauppinen and J. P. Pekola

Phys. Rev. B 54, R8353(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Large magnetotunneling effect at low magnetic fields in micrometer-scale epitaxial ${La}_{0.67}$ ${Sr}_{0.33}$ Mn $O_{3}$ tunnel junctions

Yu Lu, X. W. Li, G. Q. Gong, Gang Xiao, A. Gupta, P. Lecoeur, J. Z. Sun, Y. Y. Wang, and V. P. Dravid

Phys. Rev. B 54, R8357(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Intrinsic band-edge photoluminescence from silicon clusters at room temperature

L. Tsybeskov, K. L. Moore, D. G. Hall, and P. M. Fauchet

Phys. Rev. B 54, R8361(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Green's-function approach to the optical nonlinearities in semiconductors and quantum-confined structures

Domenico Campi and Giuliano Colì

Phys. Rev. B 54, R8365(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Photoinduced formation of dimers at a liquid/(001)GaAs interface

V. L. Berkovits, A. O. Gusev, V. M. Lantratov, T. V. L'vova, A. B. Pushnyi, V. P. Ulin, and D. Paget

Phys. Rev. B 54, R8369(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Raman scattering from acoustic phonons confined in Si nanocrystals

Minoru Fujii, Yoshihiko Kanzawa, Shinji Hayashi, and Keiichi Yamamoto

Phys. Rev. B 54, R8373(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Electronic properties of carbon nanotubes with polygonized cross sections

J. -C. Charlier, Ph. Lambin, and T. W. Ebbesen

Phys. Rev. B 54, R8377(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Epitaxial growth and optical transitions of cubic GaN films

D. Schikora, M. Hankeln, D. J. As, K. Lischka, T. Litz, A. Waag, T. Buhrow, and F. Henneberger

Phys. Rev. B 54, R8381(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Nanostructural and local electronic properties of Fe/W(110) correlated by scanning tunneling spectroscopy

M. Bode, R. Pascal, M. Dreyer, and R. Wiesendanger

Phys. Rev. B 54, R8385(R) (1996) - Published 15 September, 1996

RAPID COMMUNICATION

Electronic-structure effect on core-level excitation and charge transfer in ions scattering from alkali-metal-covered surfaces

Q. B. Lu, R. Souda, D. J. O'Connor, B. V. King, and R. J. MacDonald

Phys. Rev. B 54, R8389(R) (1996) - Published 15 September, 1996

ARTICLES

Electronic structure: wide-band, narrow-band, and strongly correlated systems

Pseudopotential variational quantum Monte Carlo approach to bcc lithium

G. Yao, J. G. Xu, and X. W. Wang

Phys. Rev. B 54, 8393 (1996) - Published 15 September, 1996

Simple analytical embedded-atom-potential model including a long-range force for fcc metals and their alloys

J. Cai and Y. Y. Ye

Phys. Rev. B 54, 8398 (1996) - Published 15 September, 1996

Self-consistent ${GW}_{0}$ results for the electron gas: Fixed screened potential $W_{0}$ within the random-phase approximation

Ulf von Barth and Bengt Holm

Phys. Rev. B 54, 8411 (1996) - Published 15 September, 1996

Investigation of density functionals to predict both ground-state properties and band structures

G. E. Engel and Warren E. Pickett

Phys. Rev. B 54, 8420 (1996) - Published 15 September, 1996

Algebraic Bethe ansatz for the supersymmetric U model

Katrina E. Hibberd, Mark D. Gould, and Jon R. Links

Phys. Rev. B 54, 8430 (1996) - Published 15 September, 1996

Electronic structure of the quasi-one-dimensional halogen-bridged Ni complexes [Ni(chxn $)_{2}$ X] $X_{2}$ (X=Cl, Br) and related Ni compounds

H. Okamoto, Y. Shimada, Y. Oka, A. Chainani, T. Takahashi, H. Kitagawa, T. Mitani, K. Toriumi, K. Inoue, T. Manabe, and M. Yamashita

Phys. Rev. B 54, 8438 (1996) - Published 15 September, 1996

Photoemission spectral weight distribution in $Y_{1 - x}$ ${Ca}_{x}$ ${TiO}_{3}$

K. Morikawa, T. Mizokawa, A. Fujimori, Y. Taguchi, and Y. Tokura

Phys. Rev. B 54, 8446 (1996) - Published 15 September, 1996

Transfer of spectral weight in spectroscopies of correlated electron systems

M. J. Rozenberg, G. Kotliar, and H. Kajueter

Phys. Rev. B 54, 8452 (1996) - Published 15 September, 1996

Anderson localization for two interacting electrons in a disordered chain

S. N. Evangelou, Shi-Jie Xiong, and E. N. Economou

Phys. Rev. B 54, 8469 (1996) - Published 15 September, 1996

Anderson transition and critical level statistics in 2.58 dimensions

G. N. Katomeris and S. N. Evangelou

Phys. Rev. B 54, 8474 (1996) - Published 15 September, 1996

Anisotropic electrical resistivity of ferromagnetic Co-Pd and Co-Pt alloys

H. Ebert, A. Vernes, and John Banhart

Phys. Rev. B 54, 8479 (1996) - Published 15 September, 1996

Collective transport through charge-density-wave heterostructures

B. Rejaei and G. E. W. Bauer

Phys. Rev. B 54, 8487 (1996) - Published 15 September, 1996

Exact boundary critical exponents and tunneling effects in integrable models for quantum wires

Y. Wang, J. Voit, and Fu-Cho Pu

Phys. Rev. B 54, 8491 (1996) - Published 15 September, 1996

Electronic structure of ${Al}_{3}$ Ni and ${AlNi}_{3}$ alloys

Zs. Kovács, L. Kövér, P. Weightman, D. Varga, R. Sanjinés, J. Pálinkás, G. Margaritondo, and H. Adachi

Phys. Rev. B 54, 8501 (1996) - Published 15 September, 1996

Additional electromagnetic waves and stimulated light scattering in the vicinity of an excitonic resonance

G. F. Kventsel and B. I. Lembrikov

Phys. Rev. B 54, 8506 (1996) - Published 15 September, 1996

Semiconductors I: bulk

Effects of point defects on lattice parameters of semiconductors

NuoFu Chen, Yutian Wang, Hongjia He, and Lanying Lin

Phys. Rev. B 54, 8516 (1996) - Published 15 September, 1996

Atomic structure of defect complexes containing carbon and hydrogen in GaAs

Sun-Ghil Lee and K. J. Chang

Phys. Rev. B 54, 8522 (1996) - Published 15 September, 1996

Point defects and their reactions in electron-irradiated GaAs investigated by optical absorption spectroscopy

H. Hausmann, A. Pillukat, and P. Ehrhart

Phys. Rev. B 54, 8527 (1996) - Published 15 September, 1996

Polarization-dependent density-functional theory and quasiparticle theory: Optical response beyond local-density approximations

Wilfried G. Aulbur, Lars Jönsson, and John W. Wilkins

Phys. Rev. B 54, 8540 (1996) - Published 15 September, 1996

Spin-resonance determination of the electron effective g value of ${In}_{0.53}$ ${Ga}_{0.47}$ As

B. Kowalski, H. Linke, and P. Omling

Phys. Rev. B 54, 8551 (1996) - Published 15 September, 1996

Anderson impurity in a semiconductor

Clare C. Yu and M. Guerrero

Phys. Rev. B 54, 8556 (1996) - Published 15 September, 1996

Landau-like states in the magneto-optical spectrum of a shallow donor impurity: Theory versus experiment

P. W. Barmby, J. L. Dunn, C. A. Bates, and T. O. Klaassen

Phys. Rev. B 54, 8566 (1996) - Published 15 September, 1996

Comparison between multiple trapping and multiple hopping transport in a random medium

B. Hartenstein, H. Bässler, A. Jakobs, and K. W. Kehr

Phys. Rev. B 54, 8574 (1996) - Published 15 September, 1996

Second-order Raman spectrum of AlSb from ab initio phonon calculations and evidence for overbending in the LO phonon branch

Wolfgang Windl, Pasquale Pavone, and Dieter Strauch

Phys. Rev. B 54, 8580 (1996) - Published 15 September, 1996

Displaced squeezed number states of the phonon field in polar semiconductors

S. Baskoutas, A. Jannussis, and P. Yianoulis

Phys. Rev. B 54, 8586 (1996) - Published 15 September, 1996

Semiconductors II: surfaces, interfaces, microstructures, and related topics

Surface structure of the (3×1) and (3×2) reconstructions of Ge(113)

Zheng Gai, Hang Ji, Bo Gao, R. G. Zhao, and W. S. Yang

Phys. Rev. B 54, 8593 (1996) - Published 15 September, 1996

Influence of surfactant coverage on epitaxial growth of Ge on Si(001)

M. Katayama, T. Nakayama, M. Aono, and C. F. McConville

Phys. Rev. B 54, 8600 (1996) - Published 15 September, 1996

Surface phonons of hydrogen-terminated semiconductor surfaces. III. Diamond (001) monohydride and dihydride

B. Sandfort, A. Mazur, and J. Pollmann

Phys. Rev. B 54, 8605 (1996) - Published 15 September, 1996

Spontaneous coherence and collective modes in double-layer quantum-dot systems

Jun Hu, E. Dagotto, and A. H. MacDonald

Phys. Rev. B 54, 8616 (1996) - Published 15 September, 1996

Observation of a Cs-induced state in the band gap of GaP(110): Alkali-metal bonding and Fermi-level pinning

G. Neuhold, Th. Chassé, J. J. Paggel, and K. Horn

Phys. Rev. B 54, 8623 (1996) - Published 15 September, 1996

Two-photon transitions in systems with semiconductor quantum dots

A. V. Fedorov, A. V. Baranov, and K. Inoue

Phys. Rev. B 54, 8627 (1996) - Published 15 September, 1996

Long-range resonance transfer of electronic excitations in close-packed CdSe quantum-dot solids

C. R. Kagan, C. B. Murray, and M. G. Bawendi

Phys. Rev. B 54, 8633 (1996) - Published 15 September, 1996

Wigner crystallization in the lowest Landau level for ν⩾1/5

V. A. Kashurnikov, N. V. Prokof’ev, B. V. Svistunov, and I. S. Tupitsyn

Phys. Rev. B 54, 8644 (1996) - Published 15 September, 1996

Collective and single-particle excitations of the quasi-one-dimensional electron gas in the presence of a magnetic field

L. Wendler and V. G. Grigoryan

Phys. Rev. B 54, 8652 (1996) - Published 15 September, 1996

Transmission spectrum of a tunneling particle interacting with dynamical fields: Real-time functional-integral approach

Masahito Ueda

Phys. Rev. B 54, 8676 (1996) - Published 15 September, 1996

Theory of arbitrarily polarized quantum Hall states: Filling fractions and wave functions

Sudhansu S. Mandal and V. Ravishankar

Phys. Rev. B 54, 8688 (1996) - Published 15 September, 1996

Direct test of the composite-fermion model in quantum Hall systems

Sudhansu S. Mandal and V. Ravishankar

Phys. Rev. B 54, 8699 (1996) - Published 15 September, 1996

Models for the integer quantum Hall effect: The network model, the Dirac equation, and a tight-binding Hamiltonian

C.-M. Ho and J. T. Chalker

Phys. Rev. B 54, 8708 (1996) - Published 15 September, 1996

Pressure dependence of the optic phonon energies in ${Al}_{x}$ ${Ga}_{1 - x}$ As

M. Holtz, M. Seon, O. Brafman, R. Manor, and D. Fekete

Phys. Rev. B 54, 8714 (1996) - Published 15 September, 1996

Uniaxial-stress investigation of the phonon-assisted recombination mechanisms associated with the X states in type-II GaAs/AlAs superlattices

W. R. Tribe, P. C. Klipstein, G. W. Smith, and R. Grey

Phys. Rev. B 54, 8721 (1996) - Published 15 September, 1996

Electron-assisted exciton transfer and long-lived electrons and holes in GaAs/ ${Al}_{x}$ ${Ga}_{1 - x}$ As quantum wells

B. M. Ashkinadze, E. Tsidilkovski, E. Linder, E. Cohen, Arza Ron, and L. N. Pfeiffer

Phys. Rev. B 54, 8728 (1996) - Published 15 September, 1996

Eigenfunctions of electrons in weakly disordered quantum dots: Crossover between orthogonal and unitary symmetries

E. Kanzieper and V. Freilikher

Phys. Rev. B 54, 8737 (1996) - Published 15 September, 1996

Direct formation of vertically coupled quantum dots in Stranski-Krastanow growth

N. N. Ledentsov, V. A. Shchukin, M. Grundmann, N. Kirstaedter, J. Böhrer, O. Schmidt, D. Bimberg, V. M. Ustinov, A. Yu. Egorov, A. E. Zhukov, P. S. Kop’ev, S. V. Zaitsev, N. Yu. Gordeev, Zh. I. Alferov, A. I. Borovkov, A. O. Kosogov, S. S. Ruvimov, P. Werner, U. Gösele, and J. Heydenreich

Phys. Rev. B 54, 8743 (1996) - Published 15 September, 1996

Electronic structures and band offsets of heterocrystalline superlattices (3C-AlN $)_{3 n}$ /(2H-AlN $)_{2 n}$ and (3C-SiC $)_{3 n}$ /(2H-SiC $)_{2 n}$ (n=1,2,3)

San-huang Ke, Jian Zi, Kai-ming Zhang, and Xi-de Xie

Phys. Rev. B 54, 8789 (1996) - Published 15 September, 1996

Optical absorption of wide quantum wires

A. N. Forshaw and D. M. Whittaker

Phys. Rev. B 54, 8794 (1996) - Published 15 September, 1996

Direct and indirect excitons in coupled GaAs/ ${Al}_{0.30}$ ${Ga}_{0.70}$ As double quantum wells separated by AlAs barriers

M. Bayer, V. B. Timofeev, F. Faller, T. Gutbrod, and A. Forchel

Phys. Rev. B 54, 8799 (1996) - Published 15 September, 1996

Surface physics, low-dimensional systems, and related topics

Interpretation of photoelectron spectra in ${Cu}_{n}^{-}$ clusters including thermal and final-state effects: The case of ${Cu}_{7}^{-}$

Carlo Massobrio, Alfredo Pasquarello, and Roberto Car

Phys. Rev. B 54, 8913 (1996) - Published 15 September, 1996

Metastable states in hydrogenated amorphous carbon

Sung Soo Kang, Bong Soo Kim, Duck Kyu Park, and Seung-Hun Yang

Phys. Rev. B 54, 8919 (1996) - Published 15 September, 1996