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Physical Review Letters

Volume 69, Issue 3

20 July 1992
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Announcement

Correct Policies and Procedures and Information for Contributors

Phys. Rev. Lett. 69, 393 (1992) - Published 20 July, 1992

LETTERS

General Physics

Time correlation relation for Lyapunov exponents

Denis J. Evans

Phys. Rev. Lett. 69, 395 (1992) - Published 20 July, 1992

Exactly solvable potentials and quantum algebras

Vyacheslav Spiridonov

Phys. Rev. Lett. 69, 398 (1992) - Published 20 July, 1992

Semiclassical propagation: How long can it last?

M. A. Sepúlveda, S. Tomsovic, and E. J. Heller

Phys. Rev. Lett. 69, 402 (1992) - Published 20 July, 1992

Gravitation and Astrophysics

Evaporation of two-dimensional black holes

S. W. Hawking

Phys. Rev. Lett. 69, 406 (1992) - Published 20 July, 1992

Elementary Particles and Fields

Probe of CP violation in top quark pair production at hadron supercolliders

Carl R. Schmidt and Michael E. Peskin

Phys. Rev. Lett. 69, 410 (1992) - Published 20 July, 1992

Measurement of the Λ→n+γ branching ratio

A. J. Noble, K. D. Larson, B. Bassalleck, W. J. Fickinger, J. R. Hall, A. L. Hallin, M. D. Hasinoff, D. Horváth, J. Lowe, E. K. McIntyre, D. F. Measday, J. P. Miller, B. L. Roberts, D. K. Robinson, M. Sakitt, M. Salomon, C. E. Waltham, T. M. Warner, D. A. Whitehouse, and D. M. Wolfe

Phys. Rev. Lett. 69, 414 (1992) - Published 20 July, 1992

Nuclear Physics

Optimum pair basis in the nuclear shell model

Hsi-Tseng Chen, Da Hsuan Feng, and Cheng-Li Wu

Phys. Rev. Lett. 69, 418 (1992) - Published 20 July, 1992

Atomic, Molecular, and Optical Physics

Magnetic resonance of a two-state atom dressed by a light field

Thomas E. Barrett, Nathan G. Woodard, and Gregory P. Lafyatis

Phys. Rev. Lett. 69, 422 (1992) - Published 20 July, 1992

Direct measurement of the three-body interaction parameter in a dilute polymer solution

A. T. Boothroyd, A. R. Rennie, C. B. Boothroyd, and L. J. Fetters

Phys. Rev. Lett. 69, 426 (1992) - Published 20 July, 1992

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Optimal stimulation of a conservative nonlinear oscillator: Classical and quantum-mechanical calculations

S. Krempl, T. Eisenhammer, A. Hübler, G. Mayer-Kress, and P. W. Milonni

Phys. Rev. Lett. 69, 430 (1992) - Published 20 July, 1992

Secondary instability in plane channel flow with spatially periodic perturbations

Michael F. Schatz and Harry L. Swinney

Phys. Rev. Lett. 69, 434 (1992) - Published 20 July, 1992

Plasma and Beam Physics

Absorption measurements demonstrating the importance of Δn=0 transitions in the opacity of iron

L. B. Da Silva, B. J. MacGowan, D. R. Kania, B. A. Hammel, C. A. Back, E. Hsieh, R. Doyas, C. A. Iglesias, F. J. Rogers, and R. W. Lee

Phys. Rev. Lett. 69, 438 (1992) - Published 20 July, 1992

Strongly coupled stimulated Raman backscatter from subpicosecond laser-plasma interactions

C. B. Darrow, C. Coverdale, M. D. Perry, W. B. Mori, C. Clayton, K. Marsh, and C. Joshi

Phys. Rev. Lett. 69, 442 (1992) - Published 20 July, 1992

Thomas-Fermi molecular-dynamics, linear screening, and mean-field theories of plasmas

G. Zérah, J. Clérouin, and E. L. Pollock

Phys. Rev. Lett. 69, 446 (1992) - Published 20 July, 1992

Condensed Matter: Structure, Etc.

Surfactant-controlled solid phase epitaxy of germanium on silicon

H. J. Osten, J. Klatt, G. Lippert, B. Dietrich, and E. Bugiel

Phys. Rev. Lett. 69, 450 (1992) - Published 20 July, 1992

Hydrogen effect on atomic configuration of keV-ion-irradiated carbon

G. Compagnini, L. Calcagno, and G. Foti

Phys. Rev. Lett. 69, 454 (1992) - Published 20 July, 1992

Observation of dynamical scaling in ‘‘spinodal decomposition’’ in two dimensions

H.-J. Ernst, F. Fabre, and J. Lapujoulade

Phys. Rev. Lett. 69, 458 (1992) - Published 20 July, 1992

Ab initio studies on high pressure phases of ice

Changyol Lee, David Vanderbilt, Kari Laasonen, R. Car, and M. Parrinello

Phys. Rev. Lett. 69, 462 (1992) - Published 20 July, 1992

Gap reduction and the collapse of solid C60 to a new phase of carbon under pressure

Fred Moshary, Nancy H. Chen, Isaac F. Silvera, Charles A. Brown, Harry C. Dorn, Mattanjah S. de Vries, and Donald S. Bethune

Phys. Rev. Lett. 69, 466 (1992) - Published 20 July, 1992

Slow Dynamics of Isotropic-Nematic Phase Transition in Silica Gels

X-l. Wu, W. I. Goldburg, M. X. Liu, and J. Z. Xue

Phys. Rev. Lett. 69, 470 (1992) - Published 20 July, 1992

Phase transitions of liquid-crystal films on an air-water interface

Jiuzhi Xue, C. S. Jung, and Mahn Won Kim

Phys. Rev. Lett. 69, 474 (1992) - Published 20 July, 1992

Correlation between non-Debye behavior and Q behavior of the α relaxation in glass-forming polymeric systems

J. Colmenero, A. Alegría, A. Arbe, and B. Frick

Phys. Rev. Lett. 69, 478 (1992) - Published 20 July, 1992

Lattice Instabilities in Cuprate Superconductors: A Possible Limiting Mechanism for Tc

M. Lang, R. Kürsch, A. Grauel, C. Geibel, F. Steglich, H. Rietschel, T. Wolf, Y. Hidaka, K. Kumagai, Y. Maeno, and T. Fujita

Phys. Rev. Lett. 69, 482 (1992) - Published 20 July, 1992

Atomic structure of Al-GaAs(110) interfaces

Jae-Yel Yi and J. Bernholc

Phys. Rev. Lett. 69, 486 (1992) - Published 20 July, 1992

Condensed Matter: Electronic Properties, Etc.

Spin gap and antiferromagnetic correlations in the Kondo insulator CeNiSn

T. E. Mason, G. Aeppli, A. P. Ramirez, K. N. Clausen, C. Broholm, N. Stücheli, E. Bucher, and T. T. M. Palstra

Phys. Rev. Lett. 69, 490 (1992) - Published 20 July, 1992

Evidence for superlocalization on a fractal network in conductive carbon-black–polymer composites

D. van der Putten, J. T. Moonen, H. B. Brom, J. C. M. Brokken-Zijp, and M. A. J. Michels

Phys. Rev. Lett. 69, 494 (1992) - Published 20 July, 1992

ac conductivity in La2CuO4

P. Lunkenheimer, M. Resch, A. Loidl, and Y. Hidaka

Phys. Rev. Lett. 69, 498 (1992) - Published 20 July, 1992

Time-irreversible random telegraph signal due to current along a single hopping chain

D. H. Cobden, A. Savchenko, M. Pepper, N. K. Patel, D. A. Ritchie, J. E. F. Frost, and G. A. C. Jones

Phys. Rev. Lett. 69, 502 (1992) - Published 20 July, 1992

Conductance fluctuations and chaotic scattering in ballistic microstructures

C. M. Marcus, A. J. Rimberg, R. M. Westervelt, P. F. Hopkins, and A. C. Gossard

Phys. Rev. Lett. 69, 506 (1992) - Published 20 July, 1992

Excess conductance of superconductor-semiconductor interfaces due to phase conjugation between electrons and holes

B. J. van Wees, P. de Vries, P. Magnée, and T. M. Klapwijk

Phys. Rev. Lett. 69, 510 (1992) - Published 20 July, 1992

Giant Shapiro steps with screening currents

D. Domínguez and Jorge V. José

Phys. Rev. Lett. 69, 514 (1992) - Published 20 July, 1992

First-order melting transition of an Abrikosov vortex lattice

R. E. Hetzel, A. Sudbø, and D. A. Huse

Phys. Rev. Lett. 69, 518 (1992) - Published 20 July, 1992

New aspects of the mixed state from six-terminal measurements on Bi2Sr2CaCu2Ox single crystals

R. Busch, G. Ries, H. Werthner, G. Kreiselmeyer, and G. Saemann-Ischenko

Phys. Rev. Lett. 69, 522 (1992) - Published 20 July, 1992

Staggered-field-induced hole pairing in one-dimensional correlated systems

J. Bonča, P. Prelovšek, I. Sega, H. Q. Lin, and D. K. Campbell

Phys. Rev. Lett. 69, 526 (1992) - Published 20 July, 1992

Bose glass-vortex–glass phase transition and dynamics scaling for high-Tc Nd2−xCexCuO4 thin films

Satoshi Tanda, Shigeki Ohzeki, and Tsuneyoshi Nakayama

Phys. Rev. Lett. 69, 530 (1992) - Published 20 July, 1992

Random transverse field Ising spin chains

Daniel S. Fisher

Phys. Rev. Lett. 69, 534 (1992) - Published 20 July, 1992

Evolution of excitons and polarons in polythiophene from femtoseconds to milliseconds

G. S. Kanner, X. Wei, B. C. Hess, L. R. Chen, and Z. V. Vardeny

Phys. Rev. Lett. 69, 538 (1992) - Published 20 July, 1992

Inhomogeneous broadening by nuclear spin fields: A new limit for optical transitions in solids

R. M. Macfarlane, A. Cassanho, and R. S. Meltzer

Phys. Rev. Lett. 69, 542 (1992) - Published 20 July, 1992

Cross-Disciplinary Physics

Localization of strain in the RNA backbone and its functional implication

Ariel Fernández and Herschel Rabitz

Phys. Rev. Lett. 69, 546 (1992) - Published 20 July, 1992

COMMENTS

Comment on ‘‘Dimer charge asymmetry determined by photoemission from epitaxial Ge on Si(100)-(2×1)’’

J. E. Rowe and G. K. Wertheim

Phys. Rev. Lett. 69, 550 (1992) - Published 20 July, 1992

Comment on ‘‘Dimer charge asymmetry determined by photoemission from epitaxial Ge on Si(100)-(2×1)’’

F. J. Himpsel

Phys. Rev. Lett. 69, 551 (1992) - Published 20 July, 1992

Lin et al. reply

D.-S. Lin, J. A. Carlisle, T. Miller, and T.-C. Chiang

Phys. Rev. Lett. 69, 552 (1992) - Published 20 July, 1992

ERRATA

Nonlinear W^∞ Current Algebra in the SL(2,R)U(1) Coset Model

Feng Yu and Yong-Shi Wu

Phys. Rev. Lett. 69, 554 (1992) - Published 20 July, 1992

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