Volume 76, Issue 11

P. A. Norreys, M. Zepf, S. Moustaizis, A. P. Fews, J. Zhang, P. Lee, M. Bakarezos, C. N. Danson, A. Dyson, P. Gibbon, P. Loukakos, D. Neely, F. N. Walsh, J. S. Wark, and A. E. Dangor

Phys. Rev. Lett. 76, 1832 (1996) - Published 11 March, 1996

Frequency Separation Method for Relaxation Problems

Spiros Alexiou

Phys. Rev. Lett. 76, 1836 (1996) - Published 11 March, 1996

Wall Association and Recirculation in Expanding Thermal Arc Plasmas

R. F. G. Meulenbroeks, D. C. Schram, M. C. M. van de Sanden, and J. A. M. van der Mullen

Phys. Rev. Lett. 76, 1840 (1996) - Published 11 March, 1996

Condensed Matter: Structure, Etc.

Frozen Phases of Random Heteropolymers in Disordered Media

D. Bratko, Arup K. Chakraborty, and Eugene I. Shakhnovich

Phys. Rev. Lett. 76, 1844 (1996) - Published 11 March, 1996

Rough Growth and Morphological Instability of Compact Electrodeposits

J. M. Pastor and Miguel A. Rubio

Phys. Rev. Lett. 76, 1848 (1996) - Published 11 March, 1996

Crystal Symmetry Lowering at an Order-Disorder Transition

James W. Richardson, David Long Price, and Marie-Louise Saboungi

Phys. Rev. Lett. 76, 1852 (1996) - Published 11 March, 1996

Resonant-Coherent Excitation of Channeled Ions

F. J. García de Abajo and P. M. Echenique

Phys. Rev. Lett. 76, 1856 (1996) - Published 11 March, 1996

Metallization of Fluid Molecular Hydrogen at 140 GPa (1.4 Mbar)

S. T. Weir, A. C. Mitchell, and W. J. Nellis

Phys. Rev. Lett. 76, 1860 (1996) - Published 11 March, 1996

Spectral Signature of Low Temperature Hopping Between Two Impurity-Induced Elastic Configurations

R. Lai, C. E. Mungan, and A. J. Sievers

Phys. Rev. Lett. 76, 1864 (1996) - Published 11 March, 1996

Electrothermal Effect in Nematic Liquid Crystal

I. Lelidis and G. Durand

Phys. Rev. Lett. 76, 1868 (1996) - Published 11 March, 1996

Study of the Dynamic Structure Factor in the $β$ Relaxation Regime of Polybutadiene

A. Arbe, U. Buchenau, L. Willner, D. Richter, B. Farago, and J. Colmenero

Phys. Rev. Lett. 76, 1872 (1996) - Published 11 March, 1996

Thermal Expansion Study of Ordered and Disordered F $e_{3}$ Al: An Effective Approach for the Determination of Vibrational Entropy

Goutam Dev Mukherjee, C. Bansal, and Ashok Chatterjee

Phys. Rev. Lett. 76, 1876 (1996) - Published 11 March, 1996

Fluctuative Mechanism of Vortex Nucleation in the Flow of $^{4} He$

F. V. Kusmartsev

Phys. Rev. Lett. 76, 1880 (1996) - Published 11 March, 1996

Heat Capacity Study of the Quantum Antiferromagnetism of a $^{3}$ He Monolayer

Marcio Siqueira, Jan Nyéki, Brian Cowan, and John Saunders

Phys. Rev. Lett. 76, 1884 (1996) - Published 11 March, 1996

Tip-Assisted Diffusion on Ag(110) in Scanning Tunneling Microscopy

Jiutao Li, Richard Berndt, and Wolf-Dieter Schneider

Phys. Rev. Lett. 76, 1888 (1996) - Published 11 March, 1996

Formation of Surface Ternary Alloys by Coadsorption of Alkali Metals on Al(111)

S. V. Christensen, J. Nerlov, K. Nielsen, J. Burchhardt, M. M. Nielsen, and D. L. Adams

Phys. Rev. Lett. 76, 1892 (1996) - Published 11 March, 1996

Condensed Matter: Electronic Properties, Etc.

Semiclassical Limits of the Spectrum of Harper's Equation

Michael Wilkinson and Ritchie J. Kay

Phys. Rev. Lett. 76, 1896 (1996) - Published 11 March, 1996

Direct Measurement of Conjugated Polymer Electronic Excitation Energies Using Metal/Polymer/Metal Structures

I. H. Campbell, T. W. Hagler, D. L. Smith, and J. P. Ferraris

Phys. Rev. Lett. 76, 1900 (1996) - Published 11 March, 1996

Resonant Polaron Coupling of High Index Electron Landau Levels in GaAs Heterostructures

C. M. Hu, E. Batke, K. Köhler, and P. Ganser

Phys. Rev. Lett. 76, 1904 (1996) - Published 11 March, 1996

Polarizability of Small Metal Particles: “Weak Localization” Effects

K. B. Efetov

Phys. Rev. Lett. 76, 1908 (1996) - Published 11 March, 1996

Multivalley Electron Population Dynamics on the Ge(111):As Surface

Armin Rettenberger and Richard Haight

Phys. Rev. Lett. 76, 1912 (1996) - Published 11 March, 1996

Resonant Photon-Assisted Tunneling through a Double Quantum Dot: An Electron Pump from Spatial Rabi Oscillations

C. A. Stafford and Ned S. Wingreen

Phys. Rev. Lett. 76, 1916 (1996) - Published 11 March, 1996

Quasiparticle Tunneling Properties of Planar ${YBa}_{2} {Cu}_{3} O_{7 - δ} / {PrBa}_{2} {Cu}_{3} O_{7 - δ^{'}} / {HoBa}_{2} {Cu}_{3} O_{7 - δ}$ Heterostructures

A. M. Cucolo, R. Di Leo, A. Nigro, P. Romano, F. Bobba, E. Bacca, and P. Prieto

Phys. Rev. Lett. 76, 1920 (1996) - Published 11 March, 1996

Meissner-like Response of Type-II Superconductors in the Mixed State

G. D'Anna

Phys. Rev. Lett. 76, 1924 (1996) - Published 11 March, 1996

Thermal Depinning of Flux Lines in ${{HgBa}_{2} CuO}_{4 + δ}$ from $^{199}$ Hg Spin-Lattice Relaxation

B. J. Suh, F. Borsa, J. Sok, D. R. Torgeson, M. Corti, A. Rigamonti, and Q. Xiong

Phys. Rev. Lett. 76, 1928 (1996) - Published 11 March, 1996

Plaquette Resonating-Valence-Bond Ground State of Ca $V_{4}$ $O_{9}$

Kazuo Ueda, Hiroshi Kontani, Manfred Sigrist, and Patrick A. Lee

Phys. Rev. Lett. 76, 1932 (1996) - Published 11 March, 1996

Local Magnetism and Crystal Fields of Pr in PrB $a_{2}$ C $u_{3}$ $O_{7}$ Studied by $^{141}$ Pr NMR

K. Nehrke and M. W. Pieper

Phys. Rev. Lett. 76, 1936 (1996) - Published 11 March, 1996

Morphology-Induced Oscillations of the Magnetic Anisotropy in Ultrathin Co Films

W. Weber, C. H. Back, A. Bischof, Ch. Würsch, and R. Allenspach

Phys. Rev. Lett. 76, 1940 (1996) - Published 11 March, 1996

Evidence for a Direct d-d Hybridization Mechanism for the Interlayer Exchange Coupling in Epitaxial Co/Mn Multilayers

Y. Henry and K. Ounadjela

Phys. Rev. Lett. 76, 1944 (1996) - Published 11 March, 1996

Spatiotemporal Near-Field Spin Microscopy in Patterned Magnetic Heterostructures

J. Levy, V. Nikitin, J. M. Kikkawa, A. Cohen, N. Samarth, R. Garcia, and D. D. Awschalom

Phys. Rev. Lett. 76, 1948 (1996) - Published 11 March, 1996

Plasmon Dispersion and Damping at the Surface of a Semimetal

P. Laitenberger and R. E. Palmer

Phys. Rev. Lett. 76, 1952 (1996) - Published 11 March, 1996

Cross-Disciplinary Physics

Wave-Unlocking Transition in Resonantly Coupled Complex Ginzburg-Landau Equations

A. Amengual, D. Walgraef, M. San Miguel, and E. Hernández-García

Phys. Rev. Lett. 76, 1956 (1996) - Published 11 March, 1996

Surface Enhanced Photodissociation of Physisorbed Molecules

L. Šiller, S. L. Bennett, M. A. MacDonald, R. A. Bennett, R. E. Palmer, and J. S. Foord

Phys. Rev. Lett. 76, 1960 (1996) - Published 11 March, 1996

Mean Field Approach to Bayes Learning in Feed-Forward Neural Networks

Manfred Opper and Ole Winther

Phys. Rev. Lett. 76, 1964 (1996) - Published 11 March, 1996

Negative Resistance and Rectification in Brownian Transport

Guillermo A. Cecchi and Marcelo O. Magnasco

Phys. Rev. Lett. 76, 1968 (1996) - Published 11 March, 1996

COMMENTS

Comment on “Amplification under the Standard Quantum Limit”

Olle Nilsson, Anders Karlsson, Jean-Philippe Poizat, and Eilert Berglind

Phys. Rev. Lett. 76, 1972 (1996) - Published 11 March, 1996

D'Ariano et al. Reply:

G. M. D'Ariano, C. Macchiavello, and M. G. A. Paris

Phys. Rev. Lett. 76, 1973 (1996) - Published 11 March, 1996

Comment on “Exact Results on Scaling Exponents in the 2D Enstrophy Cascade”

G. Falkovich and V. Lebedev

Phys. Rev. Lett. 76, 1974 (1996) - Published 11 March, 1996

Eyink Replies:

G. Eyink

Phys. Rev. Lett. 76, 1975 (1996) - Published 11 March, 1996

Can Zipf Distinguish Language From Noise in Noncoding DNA?

N. E. Israeloff, M. Kagalenko, and K. Chan

Phys. Rev. Lett. 76, 1976 (1996) - Published 11 March, 1996

No Signs of Hidden Language in Noncoding DNA

Sebastian Bonhoeffer, Andreas V. M. Herz, Maarten C. Boerlijst, Sean Nee, Martin A. Nowak, and Robert M. May

Phys. Rev. Lett. 76, 1977 (1996) - Published 11 March, 1996

Comment on “Linguistic Features of Noncoding DNA Sequences”

Richard F. Voss

Phys. Rev. Lett. 76, 1978 (1996) - Published 11 March, 1996

Mantegna et al. Reply:

R. N. Mantegna, S. V. Buldyrev, A. L. Goldberger, S. Havlin, C.-K. Peng, M. Simons, and H. E. Stanley

Phys. Rev. Lett. 76, 1979 (1996) - Published 11 March, 1996

ERRATA

Spatial Correlation in Quantum Chaotic Systems with Time-Reversal Symmetry: Theory and Experiment

V. N. Prigodin, Nobuhiko Taniguchi, A. Kudrolli, V. Kidambi, and S. Sridhar

Phys. Rev. Lett. 76, 1982 (1996) - Published 11 March, 1996

Role of Biexcitons in the Stimulated Emission of Wide-Gap II-VI Quantum Wells

F. Kreller, M. Lowisch, J. Puls, and F. Henneberger

Phys. Rev. Lett. 76, 1982 (1996) - Published 11 March, 1996

Correlation between Shear Viscosity and Anisotropic Domain Growth during Spinodal Decomposition under Shear Flow

Jörg Läuger, Christian Laubner, and Wolfram Gronski

Phys. Rev. Lett. 76, 1983 (1996) - Published 11 March, 1996

Neutron Scattering and Superconducting Order Parameter in Y ${Ba}_{2}$ ${Cu}_{3}$ $O_{7}$

I. I. Mazin and Victor M. Yakovenko

Phys. Rev. Lett. 76, 1984 (1996) - Published 11 March, 1996