Volume 64, Issue 20

14 May 1990

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LETTERS

General Physics

Organization of chaos in area-preserving maps

Itzhack Dana

Phys. Rev. Lett. 64, 2339 (1990) - Published 14 May, 1990

Stochastically induced coherence in bistable systems

Andrew J. Irwin, Simon J. Fraser, and Raymond Kapral

Phys. Rev. Lett. 64, 2343 (1990) - Published 14 May, 1990

Exact equivalence of spin-1/2 Aharonov-Bohm and Aharonov-Casher effects

C. R. Hagen

Phys. Rev. Lett. 64, 2347 (1990) - Published 14 May, 1990

Classification of strange attractors by integers

Gabriel B. Mindlin, Xin-Jun Hou, Hernán G. Solari, R. Gilmore, and N. B. Tufillaro

Phys. Rev. Lett. 64, 2350 (1990) - Published 14 May, 1990

Unpredictability and undecidability in dynamical systems

Cristopher Moore

Phys. Rev. Lett. 64, 2354 (1990) - Published 14 May, 1990

Can a noninvasive measurement of magnetic flux be performed with superconducting circuits?

C. D. Tesche

Phys. Rev. Lett. 64, 2358 (1990) - Published 14 May, 1990

Atomic, Molecular, and Optical Physics

cw conical emission: First comparison and agreement between theory and experiment

J. F. Valley, G. Khitrova, H. M. Gibbs, J. W. Grantham, and Xu Jiajin

Phys. Rev. Lett. 64, 2362 (1990) - Published 14 May, 1990

First observation of resonant excitation of high-n states in positronium

K. P. Ziock, R. H. Howell, F. Magnotta, R. A. Failor, and K. M. Jones

Phys. Rev. Lett. 64, 2366 (1990) - Published 14 May, 1990

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Numerical simulations of soft and hard turbulence: Preliminary results for two-dimensional convection

E. E. DeLuca, J. Werne, R. Rosner, and F. Cattaneo

Phys. Rev. Lett. 64, 2370 (1990) - Published 14 May, 1990

Improved beam confinement in the modified betatron with strong focusing

C. A. Kapetanakos, L. K. Len, T. Smith, J. Golden, K. Smith, S. J. Marsh, D. Dialetis, J. Mathew, P. Loschialpo, and J. H. Chang

Phys. Rev. Lett. 64, 2374 (1990) - Published 14 May, 1990

Convection at finite Rayleigh numbers in large-aspect-ratio containers

A. C. Newell, T. Passot, and M. Souli

Phys. Rev. Lett. 64, 2378 (1990) - Published 14 May, 1990

Sheared boundary layers in turbulent Rayleigh-Bénard convection

T. H. Solomon and J. P. Gollub

Phys. Rev. Lett. 64, 2382 (1990) - Published 14 May, 1990

Condensed Matter: Structure, Etc.

Heat capacity and sticking probability measurements of ${}^{4}{He}$ submonolayers adsorbed on evaporated Ag films: Bose statistics in two dimensions

T. W. Kenny and P. L. Richards

Phys. Rev. Lett. 64, 2386 (1990) - Published 14 May, 1990

Random-tiling quasicrystal in three dimensions

Lei-Han Tang

Phys. Rev. Lett. 64, 2390 (1990) - Published 14 May, 1990

1/f phonon-number fluctuations in quartz observed by laser light scattering

Musha Toshimitsu, Borbély Gábor, and Shoji Minoru

Phys. Rev. Lett. 64, 2394 (1990) - Published 14 May, 1990

Angular dependence of dipole scattering cross section: Surface-plasmon losses on Ag(100)

M. Rocca and U. Valbusa

Phys. Rev. Lett. 64, 2398 (1990) - Published 14 May, 1990

Scanning tunneling microscopy of crystal dislocations in gallium arsenide

G. Cox, D. Szynka, U. Poppe, K. H. Graf, K. Urban, C. Kisielowski-Kemmerich, J. Krüger, and H. Alexander

Phys. Rev. Lett. 64, 2402 (1990) - Published 14 May, 1990

Finite-temperature phase diagram of vicinal Si(100) surfaces

O. L. Alerhand, A. Nihat Berker, J. D. Joannopoulos, David Vanderbilt, R. J. Hamers, and J. E. Demuth

Phys. Rev. Lett. 64, 2406 (1990) - Published 14 May, 1990

Disordering of the (3×1) reconstruction on Si(113) and the chiral three-state Potts model

Y.-N. Yang, E. D. Williams, R. L. Park, N. C. Bartelt, and T. L. Einstein

Phys. Rev. Lett. 64, 2410 (1990) - Published 14 May, 1990

Observation of a local structural change at $T_{c}$ for ${Tl}_{2}$ ${Ba}_{2}$ ${CaCu}_{2}$ $O_{8}$ by pulsed neutron diffraction

B. H. Toby, T. Egami, J. D. Jorgensen, and M. A. Subramanian

Phys. Rev. Lett. 64, 2414 (1990) - Published 14 May, 1990

Condensed Matter: Electronic Properties, Etc.

Quantum electrodynamics near a photonic band gap: Photon bound states and dressed atoms

Sajeev John and Jian Wang

Phys. Rev. Lett. 64, 2418 (1990) - Published 14 May, 1990

Charge accumulation in a double-barrier resonant-tunneling structure studied by photoluminescence and photoluminescence-excitation spectroscopy

Hisao Yoshimura, Joel N. Schulman, and Hiroyuki Sakaki

Phys. Rev. Lett. 64, 2422 (1990) - Published 14 May, 1990

Nonthermal occupation of higher subbands in semiconductor superlattices via sequential resonant tunneling

H. T. Grahn, H. Schneider, W. W. Rühle, K. von Klitzing, and K. Ploog

Phys. Rev. Lett. 64, 2426 (1990) - Published 14 May, 1990

Femtosecond spin-polarization spectroscopy in diluted-magnetic-semiconductor quantum wells

M. R. Freeman, D. D. Awschalom, J. M. Hong, and L. L. Chang

Phys. Rev. Lett. 64, 2430 (1990) - Published 14 May, 1990

Interaction of magnetoexcitons and two-dimensional electron gas in the quantum Hall regime

W. Chen, M. Fritze, A. V. Nurmikko, D. Ackley, C. Colvard, and H. Lee

Phys. Rev. Lett. 64, 2434 (1990) - Published 14 May, 1990

Evidence of dimensional crossover of the spin-glass transition in thin CuMn multilayers

A. Gavrin, J. R. Childress, C. L. Chien, B. Martinez, and M. B. Salamon

Phys. Rev. Lett. 64, 2438 (1990) - Published 14 May, 1990

Aspects of the correlation effects, antiferromagnetic order, and translational symmetry of the electronic structure of NiO and CoO

Z.-X. Shen, C. K. Shih, O. Jepsen, W. E. Spicer, I. Lindau, and J. W. Allen

Phys. Rev. Lett. 64, 2442 (1990) - Published 14 May, 1990

Size and fluctuation effects on the dynamics of linear domain walls in an Ising ferromagnet

J. Kötzler, M. Grahl, I. Sessler, and J. Ferré

Phys. Rev. Lett. 64, 2446 (1990) - Published 14 May, 1990

Normal-state properties of the uniform resonating-valence-bond state

Naoto Nagaosa and Patrick A. Lee

Phys. Rev. Lett. 64, 2450 (1990) - Published 14 May, 1990

Scaling approach to pinning: Charge density waves and giant flux creep in superconductors

Thomas Nattermann

Phys. Rev. Lett. 64, 2454 (1990) - Published 14 May, 1990

Complete elastic constants and giant softening of $c_{66}$ in superconducting ${La}_{1.86}$ ${Sr}_{0.14}$ ${CuO}_{4}$

A. Migliori, William M. Visscher, S. Wong, S. E. Brown, I. Tanaka, H. Kojima, and P. B. Allen

Phys. Rev. Lett. 64, 2458 (1990) - Published 14 May, 1990

Cross-Disciplinary Physics

Cellular-automaton model for reactive systems

David Dab, Anna Lawniczak, Jean-Pierre Boon, and Raymond Kapral

Phys. Rev. Lett. 64, 2462 (1990) - Published 14 May, 1990

ERRATA

Thermal Conductivity of Glasses: Theory and Application to Amorphous Si

Philip B. Allen and Joseph L. Feldman

Phys. Rev. Lett. 64, 2466 (1990) - Published 14 March, 1990

Orbital Polarization and the Insulating Gap in the Transition-Metal Oxides

M. R. Norman

Phys. Rev. Lett. 64, 2466 (1990) - Published 14 March, 1990