Volume 84, Issue 13

O. Björneholm, M. Bässler, A. Ausmees, I. Hjelte, R. Feifel, H. Wang, C. Miron, M. N. Piancastelli, S. Svensson, S. L. Sorensen, F. Gel'mukhanov, and H. Ågren

Phys. Rev. Lett. 84, 2826 (2000) - Published 27 March, 2000

Photoinduced Polarization Inversion in a Polymeric Molecule

X. Sun, R. L. Fu, K. Yonemitsu, and K. Nasu

Phys. Rev. Lett. 84, 2830 (2000) - Published 27 March, 2000

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Ergodicity of Random-Matrix Theories: The Unitary Case

Z. Pluhař and H. A. Weidenmüller

Phys. Rev. Lett. 84, 2833 (2000) - Published 27 March, 2000

Relaxation and Diffusion for the Kicked Rotor

Maxim Khodas and Shmuel Fishman

Phys. Rev. Lett. 84, 2837 (2000) - Published 27 March, 2000

Unification of Perturbation Theory, Random Matrix Theory, and Semiclassical Considerations in the Study of Parametrically Dependent Eigenstates

Doron Cohen and Eric J. Heller

Phys. Rev. Lett. 84, 2841 (2000) - Published 27 March, 2000

Brewster's Scattering Angle in Scattered Waves from Slightly Rough Metal Surfaces

Tetsuya Kawanishi

Phys. Rev. Lett. 84, 2845 (2000) - Published 27 March, 2000

Observation of a cw Dark-Field Signal in an Absorption Spectroscopic Experiment Using a Phase Locked Free-Electron Laser

Eric B. Szarmes, John M. J. Madey, and Karl D. Straub

Phys. Rev. Lett. 84, 2849 (2000) - Published 27 March, 2000

Robust Photonic Band Gap from Tunable Scatterers

W. Y. Zhang, X. Y. Lei, Z. L. Wang, D. G. Zheng, W. Y. Tam, C. T. Chan, and Ping Sheng

Phys. Rev. Lett. 84, 2853 (2000) - Published 27 March, 2000

Momentum Conservation Implies Anomalous Energy Transport in 1D Classical Lattices

Tomaž Prosen and David K. Campbell

Phys. Rev. Lett. 84, 2857 (2000) - Published 27 March, 2000

Plasma and Beam Physics

Two-Color Operation in High-Gain Free-Electron Lasers

H. P. Freund and P. G. O'Shea

Phys. Rev. Lett. 84, 2861 (2000) - Published 27 March, 2000

New Alfvén Continuum Gaps and Global Modes Induced by Toroidal Flow

B. van der Holst, A. J. C. Beliën, and J. P. Goedbloed

Phys. Rev. Lett. 84, 2865 (2000) - Published 27 March, 2000

First Observation of Ion Acoustic Waves Produced by the Langmuir Decay Instability

S. Depierreux, J. Fuchs, C. Labaune, A. Michard, H. A. Baldis, D. Pesme, S. Hüller, and G. Laval

Phys. Rev. Lett. 84, 2869 (2000) - Published 27 March, 2000

Dynamics of Fast Electrons Driven by the Lower Hybrid Wave in Giant Sawtoothing Plasmas

Frédéric Imbeaux and Yves Peysson

Phys. Rev. Lett. 84, 2873 (2000) - Published 27 March, 2000

Condensed Matter: Structure, etc.

Correlations between the Scanning Tunneling Microscopy Imaged Configurations and the Electronic Structure on Stepped Si(111)-( $7 \times 7$ ) Surfaces

M. Hupalo, B. J. Min, C. Z. Wang, K. M. Ho, and M. C. Tringides

Phys. Rev. Lett. 84, 2877 (2000) - Published 27 March, 2000

Structures of High-Density and Low-Density Water

Alan K. Soper and Maria Antonietta Ricci

Phys. Rev. Lett. 84, 2881 (2000) - Published 27 March, 2000

Compositional Patterning in Systems Driven by Competing Dynamics Of Different Length Scale

Raúl A. Enrique and Pascal Bellon

Phys. Rev. Lett. 84, 2885 (2000) - Published 27 March, 2000

Nanocrystalline versus Microcrystalline ${Li}_{2} O : B_{2} O_{3}$ Composites: Anomalous Ionic Conductivities and Percolation Theory

Sylvio Indris, Paul Heitjans, H. Eduardo Roman, and Armin Bunde

Phys. Rev. Lett. 84, 2889 (2000) - Published 27 March, 2000

Molecular Traffic Control in a Nanoscale System

Louis A. Clark, George T. Ye, and Randall Q. Snurr

Phys. Rev. Lett. 84, 2893 (2000) - Published 27 March, 2000

Atomic Structure of the Polar NiO(111)- $p (2 \times 2)$ Surface

A. Barbier, C. Mocuta, H. Kuhlenbeck, K. F. Peters, B. Richter, and G. Renaud

Phys. Rev. Lett. 84, 2897 (2000) - Published 27 March, 2000

Microstructure Controlled Shear Band Pattern Formation and Enhanced Plasticity of Bulk Metallic Glasses Containing in situ Formed Ductile Phase Dendrite Dispersions

C. C. Hays, C. P. Kim, and W. L. Johnson

Phys. Rev. Lett. 84, 2901 (2000) - Published 27 March, 2000

Condensed Matter: Electronic Properties, etc.

A Nearly Universal Critical Conductivity for Semiconductor-Metal Alloys

T. G. Castner

Phys. Rev. Lett. 84, 2905 (2000) - Published 27 March, 2000

Metallic Low-Temperature Resistivity in a 2D Electron System Over an Extended Temperature Range

S. V. Kravchenko and T. M. Klapwijk

Phys. Rev. Lett. 84, 2909 (2000) - Published 27 March, 2000

Density of States in Coupled Chains with Off-Diagonal Disorder

P. W. Brouwer, C. Mudry, and A. Furusaki

Phys. Rev. Lett. 84, 2913 (2000) - Published 27 March, 2000

Defects, Quasibound States, and Quantum Conductance in Metallic Carbon Nanotubes

Hyoung Joon Choi, Jisoon Ihm, Steven G. Louie, and Marvin L. Cohen

Phys. Rev. Lett. 84, 2917 (2000) - Published 27 March, 2000

Dynamic Conductance of Carbon Nanotubes

Christopher Roland, Marco Buongiorno Nardelli, Jian Wang, and Hong Guo

Phys. Rev. Lett. 84, 2921 (2000) - Published 27 March, 2000

Coupling Between Adsorbate Vibrations and an Electronic Surface State

Eli Rotenberg, J. Schaefer, and S. D. Kevan

Phys. Rev. Lett. 84, 2925 (2000) - Published 27 March, 2000

Bloch Electrons in a Magnetic Field: Why Does Chaos Send Electrons the Hard Way?

R. Ketzmerick, K. Kruse, D. Springsguth, and T. Geisel

Phys. Rev. Lett. 84, 2929 (2000) - Published 27 March, 2000

Apparent Spin Polarization Decay in Cu-Dusted $Co / {Al}_{2} O_{3} / Co$ Tunnel Junctions

P. LeClair, H. J. M. Swagten, J. T. Kohlhepp, R. J. M. van de Veerdonk, and W. J. M. de Jonge

Phys. Rev. Lett. 84, 2933 (2000) - Published 27 March, 2000

Conductivity Tensor of Striped Quantum Hall Phases

Felix von Oppen, Bertrand I. Halperin, and Ady Stern

Phys. Rev. Lett. 84, 2937 (2000) - Published 27 March, 2000

High-Field Electrical Transport in Single-Wall Carbon Nanotubes

Zhen Yao, Charles L. Kane, and Cees Dekker

Phys. Rev. Lett. 84, 2941 (2000) - Published 27 March, 2000

Abrupt Change of Josephson Plasma Frequency at the Phase Boundary of the Bragg Glass in ${Bi}_{2} {Sr}_{2} {CaCu}_{2} O_{8 + δ}$

M. B. Gaifullin, Yuji Matsuda, N. Chikumoto, J. Shimoyama, and K. Kishio

Phys. Rev. Lett. 84, 2945 (2000) - Published 27 March, 2000

Cu NQR Study of the Stripe Phase Local Structure in the Lanthanum Cuprates

G. B. Teitel'baum, B. Büchner, and H. de Gronckel

Phys. Rev. Lett. 84, 2949 (2000) - Published 27 March, 2000

Magnetothermodynamics of the Spin- $\frac{1}{2}$ Kagomé Antiferromagnet

P. Sindzingre, G. Misguich, C. Lhuillier, B. Bernu, L. Pierre, Ch. Waldtmann, and H.-U. Everts

Phys. Rev. Lett. 84, 2953 (2000) - Published 27 March, 2000

Entropy Balance and Evidence for Local Spin Singlets in a Kagomé-Like Magnet

A. P. Ramirez, B. Hessen, and M. Winklemann

Phys. Rev. Lett. 84, 2957 (2000) - Published 27 March, 2000

Thermal and Electronic Transport Properties and Two-Phase Mixtures in ${La}_{5 / 8 - x} \Pr_{x} {Ca}_{3 / 8} {MnO}_{3}$

K. H. Kim, M. Uehara, C. Hess, P. A. Sharma, and S-W. Cheong

Phys. Rev. Lett. 84, 2961 (2000) - Published 27 March, 2000

Effects of Nuclear Spins on the Quantum Relaxation of the Magnetization for the Molecular Nanomagnet ${Fe}_{8}$

W. Wernsdorfer, A. Caneschi, R. Sessoli, D. Gatteschi, A. Cornia, V. Villar, and C. Paulsen

Phys. Rev. Lett. 84, 2965 (2000) - Published 27 March, 2000

Low to High Spin-State Transition Induced by Charge Ordering in Antiferromagnetic ${YBaCo}_{2} O_{5}$

T. Vogt, P. M. Woodward, P. Karen, B. A. Hunter, P. Henning, and A. R. Moodenbaugh

Phys. Rev. Lett. 84, 2969 (2000) - Published 27 March, 2000

FEATURED IN PHYSICS

Spatial Mapping of Mobility and Density of the Conduction Electrons in $(FA)_{2} {PF}_{6}$

G. Alexandrowicz, T. Tashma, A. Feintuch, A. Grayevsky, E. Dormann, and N. Kaplan

Phys. Rev. Lett. 84, 2973 (2000) - Published 27 March, 2000

Measurement of the Relaxation Rate of the Magnetization in ${Mn}_{12} O_{12}$ -Acetate Using Proton NMR Echo

Z. H. Jang, A. Lascialfari, F. Borsa, and D. Gatteschi

Phys. Rev. Lett. 84, 2977 (2000) - Published 27 March, 2000

Impulsive Excitation of Phonon-Pair Combination States by Second-Order Raman Scattering

Albrecht Bartels, Thomas Dekorsy, and Heinrich Kurz

Phys. Rev. Lett. 84, 2981 (2000) - Published 27 March, 2000

Observation of Vibrational Excitation and Deexcitation for NO $(v = 2)$ Scattering from Au(111): Evidence for Electron-Hole-Pair Mediated Energy Transfer

Y. Huang, A. M. Wodtke, H. Hou, C. T. Rettner, and D. J. Auerbach

Phys. Rev. Lett. 84, 2985 (2000) - Published 27 March, 2000

Interdisciplinary Physics: Biological Physics, Quantum Information, etc.

Scheme for Total Quantum Teleportation

E. DelRe, B. Crosignani, and P. Di Porto

Phys. Rev. Lett. 84, 2989 (2000) - Published 27 March, 2000

Optimal Quantum Cloning via Stimulated Emission

Christoph Simon, Gregor Weihs, and Anton Zeilinger

Phys. Rev. Lett. 84, 2993 (2000) - Published 27 March, 2000

Patterned Colloidal Deposition Controlled by Electrostatic and Capillary Forces

Joanna Aizenberg, Paul V. Braun, and Pierre Wiltzius

Phys. Rev. Lett. 84, 2997 (2000) - Published 27 March, 2000

Instabilities in a Liquid-Fluidized Bed of Gas Bubbles

M. U. Vera, A. Saint-Jalmes, and D. J. Durian

Phys. Rev. Lett. 84, 3001 (2000) - Published 27 March, 2000

Thermodynamics of Heat-Shock Response

Kristine Bourke Arnvig, Steen Pedersen, and Kim Sneppen

Phys. Rev. Lett. 84, 3005 (2000) - Published 27 March, 2000

Role of Secondary Motifs in Fast Folding Polymers: A Dynamical Variational Principle

Amos Maritan, Cristian Micheletti, and Jayanth R. Banavar

Phys. Rev. Lett. 84, 3009 (2000) - Published 27 March, 2000

Beyond Hebb: Exclusive-OR and Biological Learning

Konstantin Klemm, Stefan Bornholdt, and Heinz Georg Schuster

Phys. Rev. Lett. 84, 3013 (2000) - Published 27 March, 2000

Particle Diffusion in a Quasi-Two-Dimensional Bacterial Bath

Xiao-Lun Wu and Albert Libchaber

Phys. Rev. Lett. 84, 3017 (2000) - Published 27 March, 2000

COMMENTS

Comment on “Stripes and the $t - J$ Model”

Steven R. White and D. J. Scalapino

Phys. Rev. Lett. 84, 3021 (2000) - Published 27 March, 2000

Hellberg and Manousakis Reply:

C. Stephen Hellberg and E. Manousakis

Phys. Rev. Lett. 84, 3022 (2000) - Published 27 March, 2000

ERRATA

Erratum: Core Level Analysis of the Surface Charge Density Wave Transition in Sn $/$ Ge(111) [Phys. Rev. Lett. 83, 2789 (1999)]

T. E. Kidd, T. Miller, and T.-C. Chiang

Phys. Rev. Lett. 84, 3023 (2000) - Published 27 March, 2000