Volume 79, Issue 2

14 July 1997

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LETTERS

Elementary Particles and Fields

New Messenger Sector for Gauge Mediated Supersymmetry Breaking

R. N. Mohapatra and S. Nandi

Phys. Rev. Lett. 79, 181 (1997) - Published 14 July, 1997

Mixing-Induced $CP$ Asymmetries in Radiative $B$ Decays in and beyond the Standard Model

David Atwood, Michael Gronau, and Amarjit Soni

Phys. Rev. Lett. 79, 185 (1997) - Published 14 July, 1997

Next-to-Leading Order QCD Corrections to Three-Jet Cross Sections with Massive Quarks

Werner Bernreuther, Arnd Brandenburg, and Peter Uwer

Phys. Rev. Lett. 79, 189 (1997) - Published 14 July, 1997

Do the Quark Masses Run? Extracting ${\bar{m}}_{b} (m_{Z})$ from CERN LEP Data

Germán Rodrigo, Arcadi Santamaria, and Mikhail Bilenky

Phys. Rev. Lett. 79, 193 (1997) - Published 14 July, 1997

Sensitive Test for Models of Bose-Einstein Correlations

H. C. Eggers, P. Lipa, and B. Buschbeck

Phys. Rev. Lett. 79, 197 (1997) - Published 14 July, 1997

Nuclear Physics

Large Spin Alignment of the Unbound $^{5} He$ Fragment after Fragmentation of 240 MeV/nucleon $^{6} He$

L. V. Chulkov et al.

Phys. Rev. Lett. 79, 201 (1997) - Published 14 July, 1997

Atomic, Molecular, and Optical Physics

Quantum Interference Effects in Spontaneous Emission from an Atom Embedded in a Photonic Band Gap Structure

Shi-Yao Zhu, Hong Chen, and Hu Huang

Phys. Rev. Lett. 79, 205 (1997) - Published 14 July, 1997

Self-Induced Phase Matching in Parametric Anti-Stokes Stimulated Raman Scattering

K. Hakuta, M. Suzuki, M. Katsuragawa, and J. Z Li

Phys. Rev. Lett. 79, 209 (1997) - Published 14 July, 1997

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Localized and Cellular Patterns in a Vibrated Granular Layer

Lev S. Tsimring and Igor S. Aranson

Phys. Rev. Lett. 79, 213 (1997) - Published 14 July, 1997

Cone-Jet Analytical Extension of Taylor's Electrostatic Solution and the Asymptotic Universal Scaling Laws in Electrospraying

Alfonso M. Gañán-Calvo

Phys. Rev. Lett. 79, 217 (1997) - Published 14 July, 1997

Long Range Potential Effects in Low Density Krypton Gas

F. Formisano, C. J. Benmore, U. Bafile, F. Barocchi, P. A. Egelstaff, R. Magli, and P. Verkerk

Phys. Rev. Lett. 79, 221 (1997) - Published 14 July, 1997

Plasma and Beam Physics

Rigid-Rotor Vlasov Equilibrium for an Intense Charged-Particle Beam Propagating through a Periodic Solenoidal Magnetic Field

Chiping Chen, Renato Pakter, and Ronald C. Davidson

Phys. Rev. Lett. 79, 225 (1997) - Published 14 July, 1997

Enhancement of Turbulence in Tokamaks by Magnetic Fluctuations

B. N. Rogers and J. F. Drake

Phys. Rev. Lett. 79, 229 (1997) - Published 14 July, 1997

Hot-Electron Production and Wave Structure in a Helicon Plasma Source

A. W. Molvik, A. R. Ellingboe, and T. D. Rognlien

Phys. Rev. Lett. 79, 233 (1997) - Published 14 July, 1997

Condensed Matter: Structure, Etc.

Interfacial Segregation in Disordered Block Copolymers: Effect of Tunable Surface Potentials

P. Mansky, T. P. Russell, C. J. Hawker, J. Mays, D. C. Cook, and S. K. Satija

Phys. Rev. Lett. 79, 237 (1997) - Published 14 July, 1997

Long-Range Effects on Polymer Diffusion Induced by a Bounding Interface

X. Zheng, M. H. Rafailovich, J. Sokolov, Y. Strzhemechny, S. A. Schwarz, B. B. Sauer, and M. Rubinstein

Phys. Rev. Lett. 79, 241 (1997) - Published 14 July, 1997

Period-Doubled Structure for the $90 °$ Partial Dislocation in Silicon

J. Bennetto, R. W. Nunes, and David Vanderbilt

Phys. Rev. Lett. 79, 245 (1997) - Published 14 July, 1997

Dynamics of Collective and Molecular Modes of a Ferroelectric Liquid Crystal in Confined Geometry Using Dielectric Spectroscopy

H. Xu, J. K. Vij, A. Rappaport, and N. A. Clark

Phys. Rev. Lett. 79, 249 (1997) - Published 14 July, 1997

Quantum Phase Transition of $^{3} He$ in Aerogel at a Nonzero Pressure

K. Matsumoto, J. V. Porto, L. Pollack, E. N. Smith, T. L. Ho, and J. M. Parpia

Phys. Rev. Lett. 79, 253 (1997) - Published 14 July, 1997

Non-Arrhenius Behavior of Surface Diffusion near a Phase Transition Boundary

I. Vattulainen, J. Merikoski, T. Ala-Nissila, and S. C. Ying

Phys. Rev. Lett. 79, 257 (1997) - Published 14 July, 1997

Condensed Matter: Electronic Properties, Etc.

Unified Description of Fermi and Non-Fermi Liquid Behavior in a Conserving Slave Boson Approximation for Strongly Correlated Impurity Models

J. Kroha, P. Wölfle, and T. A. Costi

Phys. Rev. Lett. 79, 261 (1997) - Published 14 July, 1997

Anisotropic Two-Dimensional Friedel Oscillations

Ph. Hofmann, B. G. Briner, M. Doering, H.-P. Rust, E. W. Plummer, and A. M. Bradshaw

Phys. Rev. Lett. 79, 265 (1997) - Published 14 July, 1997

Type II Band Alignment in ${Si}_{1 - x} {Ge}_{x} / Si (001)$ Quantum Wells: The Ubiquitous Type I Luminescence Results from Band Bending

M. L. W. Thewalt, D. A. Harrison, C. F. Reinhart, J. A. Wolk, and H. Lafontaine

Phys. Rev. Lett. 79, 269 (1997) - Published 14 July, 1997

Channel Interference in a Quasiballistic Aharonov-Bohm Experiment

G. Cernicchiaro, T. Martin, K. Hasselbach, D. Mailly, and A. Benoit

Phys. Rev. Lett. 79, 273 (1997) - Published 14 July, 1997

Observation of Surface-Induced Broken Time-Reversal Symmetry in ${YBa}_{2} {Cu}_{3} O_{7}$ Tunnel Junctions

M. Covington, M. Aprili, E. Paraoanu, L. H. Greene, F. Xu, J. Zhu, and C. A. Mirkin

Phys. Rev. Lett. 79, 277 (1997) - Published 14 July, 1997

Tunneling into Current-Carrying Surface States of High- $T_{c}$ Superconductors

M. Fogelström, D. Rainer, and J. A. Sauls

Phys. Rev. Lett. 79, 281 (1997) - Published 14 July, 1997

Nucleation of the Supercooled Normal to Superconducting Phase Transition in Small Indium Spheres Induced by $γ$ Radiation

G. Meagher, D. DiSanto, A. Kotlicki, G. Eska, and B. G. Turrell

Phys. Rev. Lett. 79, 285 (1997) - Published 14 July, 1997

Quantum Coherence in Small Antiferromagnets

S. E. Barnes, R. Ballou, B. Barbara, and J. Strelen

Phys. Rev. Lett. 79, 289 (1997) - Published 14 July, 1997

Low-Temperature Behavior of a Magnetic Impurity in a Heisenberg Chain

Yu-Liang Liu

Phys. Rev. Lett. 79, 293 (1997) - Published 14 July, 1997

Charge Ordered States in ${La}_{1 - x} {Sr}_{x} {FeO}_{3}$

J. Q. Li, Y. Matsui, S. K. Park, and Y. Tokura

Phys. Rev. Lett. 79, 297 (1997) - Published 14 July, 1997

Direct Measurement of the Spatial Displacement of Bloch-Oscillating Electrons in Semiconductor Superlattices

V. G. Lyssenko, G. Valušis, F. Löser, T. Hasche, K. Leo, M. M. Dignam, and K. Köhler

Phys. Rev. Lett. 79, 301 (1997) - Published 14 July, 1997

Measurement of the Energy Spectrum of Secondary Electrons Ejected from Solids by Positron Impact

N. Overton and P. G. Coleman

Phys. Rev. Lett. 79, 305 (1997) - Published 14 July, 1997

Cross-Disciplinary Physics

Measurement of the Probability Distribution of Total Transmission in Random Waveguides

M. Stoytchev and A. Z. Genack

Phys. Rev. Lett. 79, 309 (1997) - Published 14 July, 1997

Morphological Instabilities in a Growing Yeast Colony: Experiment and Theory

Thomas Sams, Kim Sneppen, Mogens H. Jensen, Clive Ellegaard, Bjørn Eggert Christensen, and Ulf Thrane

Phys. Rev. Lett. 79, 313 (1997) - Published 14 July, 1997

Viscosity Dependence of the Folding Rates of Proteins

D. K. Klimov and D. Thirumalai

Phys. Rev. Lett. 79, 317 (1997) - Published 14 July, 1997

Programmable Quantum Gate Arrays

M. A. Nielsen and Isaac L. Chuang

Phys. Rev. Lett. 79, 321 (1997) - Published 14 July, 1997

Quantum Mechanics Helps in Searching for a Needle in a Haystack

Lov K. Grover

Phys. Rev. Lett. 79, 325 (1997) - Published 14 July, 1997

Amplitude and Mean Drift Equations for the Oceanic Ekman Layer

T. M. Haeusser and S. Leibovich

Phys. Rev. Lett. 79, 329 (1997) - Published 14 July, 1997