Volume 78, Issue 26

30 June 1997

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LETTERS

Nuclear Physics

Dominance of ${}^{1}S_{0}$ Proton-Pair Emission in the ${}^{16}O ({e, e}^{'} pp)$ Reaction

C. J. G. Onderwater et al.

Phys. Rev. Lett. 78, 4893 (1997) - Published 30 June, 1997

Atomic, Molecular, and Optical Physics

Radiative Lifetime Measurement of the ${Ba}^{+}$ Metastable $D_{3 / 2}$ State

N. Yu, W. Nagourney, and H. Dehmelt

Phys. Rev. Lett. 78, 4898 (1997) - Published 30 June, 1997

Two-Electron Photoejection of He and $H^{-}$

Kurt W. Meyer, Chris H. Greene, and Brett D. Esry

Phys. Rev. Lett. 78, 4902 (1997) - Published 30 June, 1997

Fluorescence Investigation of Parametrically Excited Motional Wave Packets in Optical Lattices

P. Rudy, R. Ejnisman, and N. P. Bigelow

Phys. Rev. Lett. 78, 4906 (1997) - Published 30 June, 1997

Fixed-Molecule $1 {s σ}_{g, u}$ Photoelectron Angular Distributions as a Probe of $σ_{g}^{}$ and $σ_{u}^{}$ Shape Resonances of ${CO}_{2}$

N. Watanabe, J. Adachi, K. Soejima, E. Shigemasa, A. Yagishita, N. G. Fominykh, and A. A. Pavlychev

Phys. Rev. Lett. 78, 4910 (1997) - Published 30 June, 1997

All-Order Binding Corrections to Muonium Hyperfine Splitting

S. A. Blundell, K. T. Cheng, and J. Sapirstein

Phys. Rev. Lett. 78, 4914 (1997) - Published 30 June, 1997

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Low-Dimensional Approach to Nonlinear Overstability in the Taylor-Couette Flow of Purely Elastic Fluids

Roger E. Khayat

Phys. Rev. Lett. 78, 4918 (1997) - Published 30 June, 1997

Passive Scalar: Scaling Exponents and Realizability

Robert H. Kraichnan

Phys. Rev. Lett. 78, 4922 (1997) - Published 30 June, 1997

Analytic Calculation of Anomalous Scaling in Random Shell Models for a Passive Scalar

R. Benzi, L. Biferale, and A. Wirth

Phys. Rev. Lett. 78, 4926 (1997) - Published 30 June, 1997

Two-Phase Shear Band Structures at Uniform Stress

Melanie M. Britton and Paul T. Callaghan

Phys. Rev. Lett. 78, 4930 (1997) - Published 30 June, 1997

Plasma and Beam Physics

Dissipative Dynamics of Collisionless Nonlinear Alfvén Wave Trains

M. V. Medvedev, P. H. Diamond, V. I. Shevchenko, and V. L. Galinsky

Phys. Rev. Lett. 78, 4934 (1997) - Published 30 June, 1997

Condensed Matter: Structure, Etc.

Unusual Structure, Phase Transition, and Dynamics of Solid Cubane

T. Yildirim, P. M. Gehring, D. A. Neumann, P. E. Eaton, and T. Emrick

Phys. Rev. Lett. 78, 4938 (1997) - Published 30 June, 1997

Nucleation Transitions for InGaAs Islands on Vicinal (100) GaAs

R. Leon, T. J. Senden, Yong Kim, C. Jagadish, and A. Clark

Phys. Rev. Lett. 78, 4942 (1997) - Published 30 June, 1997

Wetting of Substrates with Phase-Separated Binary Polymer Mixtures

Jan Genzer and Edward J. Kramer

Phys. Rev. Lett. 78, 4946 (1997) - Published 30 June, 1997

Long-Tailed Trapping Times and Lévy Flights in a Self-Organized Critical Granular System

Marián Boguñá and Álvaro Corral

Phys. Rev. Lett. 78, 4950 (1997) - Published 30 June, 1997

Enthalpies of Formation of $L 1_{2}$ Intermetallics Derived from Heats of Reordering

A. R. Yavari, S. Gialanella, M-D. Baro, and G. Le Caer

Phys. Rev. Lett. 78, 4954 (1997) - Published 30 June, 1997

Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH

A. M. Saitta, D. Alfè, S. de Gironcoli, and S. Baroni

Phys. Rev. Lett. 78, 4958 (1997) - Published 30 June, 1997

Layer-Dependent Surface-Induced Tilt, Hexatic, and Positional Orders in Free-Standing 7O.7 Films

Chih-Yu Chao, S. W. Hui, and John T. Ho

Phys. Rev. Lett. 78, 4962 (1997) - Published 30 June, 1997

Phase Inversion during Viscoelastic Phase Separation: Roles of Bulk and Shear Relaxation Moduli

Hajime Tanaka and Takeaki Araki

Phys. Rev. Lett. 78, 4966 (1997) - Published 30 June, 1997

Surface Modes and Ordered Patterns during Spinodal Decomposition of an ABv Model Alloy

Mathis Plapp and Jean-François Gouyet

Phys. Rev. Lett. 78, 4970 (1997) - Published 30 June, 1997

Structural Forces in Thin Films Made from Polyelectrolyte Solutions

A. Asnacios, A. Espert, A. Colin, and D. Langevin

Phys. Rev. Lett. 78, 4974 (1997) - Published 30 June, 1997

Surface Diffusion of Pt on Pt(110): Arrhenius Behavior of Long Jumps

T. R. Linderoth, S. Horch, E. Lægsgaard, I. Stensgaard, and F. Besenbacher

Phys. Rev. Lett. 78, 4978 (1997) - Published 30 June, 1997

Growth Dynamics of Crystalline Tensionless Surfaces

Esteban Moro, Rodolfo Cuerno, and Angel Sánchez

Phys. Rev. Lett. 78, 4982 (1997) - Published 30 June, 1997

Condensed Matter: Electronic Properties, Etc.

Two Interacting Quasiparticles Above the Fermi Sea

Ph. Jacquod and D. L. Shepelyansky

Phys. Rev. Lett. 78, 4986 (1997) - Published 30 June, 1997

Conductance Quantization in Bismuth Nanowires at 4 K

J. L. Costa-Krämer, N. García, and H. Olin

Phys. Rev. Lett. 78, 4990 (1997) - Published 30 June, 1997

Bonding of an Isolated K atom to a Surface: Experiment and Theory

A. Sandell, O. Hjortstam, A. Nilsson, P. A. Brühwiler, O. Eriksson, P. Bennich, P. Rudolf, J. M. Wills, B. Johansson, and N. Mårtensson

Phys. Rev. Lett. 78, 4994 (1997) - Published 30 June, 1997

Excitation Spectrum and Superexchange Pathways in the Spin Dimer ${VODPO}_{4} ̇ \frac{1}{2} D_{2} O$

D. A. Tennant, S. E. Nagler, A. W. Garrett, T. Barnes, and C. C. Torardi

Phys. Rev. Lett. 78, 4998 (1997) - Published 30 June, 1997

Observation of a Nuclear-Magnon Contribution to the Nuclear Spin-Lattice Relaxation of ${}^{191}P t$ in Ferromagnetic Cobalt

G. Seewald, E. Hagn, and E. Zech

Phys. Rev. Lett. 78, 5002 (1997) - Published 30 June, 1997

Cross-Disciplinary Physics

Metal-Polymer Interactions in a Polymer/Metal Nanocomposite

Douglas H. Cole, Kenneth R. Shull, L. E. Rehn, and P. Baldo

Phys. Rev. Lett. 78, 5006 (1997) - Published 30 June, 1997

Experimental Demonstration of Diffusion-Limited Dynamics in Electrodeposition

C. Léger, J. Elezgaray, and F. Argoul

Phys. Rev. Lett. 78, 5010 (1997) - Published 30 June, 1997

Increasing the Efficiency of Ideal Solar Cells by Photon Induced Transitions at Intermediate Levels

Antonio Luque and Antonio Martí

Phys. Rev. Lett. 78, 5014 (1997) - Published 30 June, 1997

Mean-Field Analysis of a Dynamical Phase Transition in a Cellular Automaton Model for Collective Motion

Harmen J. Bussemaker, Andreas Deutsch, and Edith Geigant

Phys. Rev. Lett. 78, 5018 (1997) - Published 30 June, 1997

Entanglement of a Pair of Quantum Bits

Sam A. Hill and William K. Wootters

Phys. Rev. Lett. 78, 5022 (1997) - Published 30 June, 1997

COMMENTS

Comment on ``Metallization of Fluid Molecular Hydrogen at 140 GPa (1.4 Mbar)''

J. M. Besson

Phys. Rev. Lett. 78, 5026 (1997) - Published 30 June, 1997

Nellis and Weir Reply:

W. J. Nellis and S. T. Weir

Phys. Rev. Lett. 78, 5027 (1997) - Published 30 June, 1997

Comment on ``Scaling of the Quasiparticle Spectrum for $d$ -wave Superconductors''

G. E. Volovik and N. B. Kopnin

Phys. Rev. Lett. 78, 5028 (1997) - Published 30 June, 1997

Simon and Lee Reply:

Steven H. Simon and Patrick A. Lee

Phys. Rev. Lett. 78, 5029 (1997) - Published 30 June, 1997

Full Determination of the Configuration Coordinate Diagram for the $F$ Center in KBr?

Heikki Collan

Phys. Rev. Lett. 78, 5030 (1997) - Published 30 June, 1997

Nisoli et al. Reply:

M. Nisoli, S. De Silvestri, O. Svelto, R. Scholz, R. Fanciulli, V. Pellegrini, F. Beltram, and F. Bassani

Phys. Rev. Lett. 78, 5031 (1997) - Published 30 June, 1997

ERRATA

New Prospects for Real-Time Spectroscopy of Low Energy Electron Neutrinos from the Sun [Phys. Rev. Lett. 78, 3618 (1997)]

R. S. Raghavan

Phys. Rev. Lett. 78, 5032 (1997) - Published 30 June, 1997