Volume 77, Issue 8

S. Flibotte, Ph. Chomaz, M. Colonna, M. Cromaz, J. DeGraaf, T. E. Drake, A. Galindo-Uribarri, V. P. Janzen, J. Jonkman, S. W. Marshall, S. M. Mullins, J. M. Nieminen, D. C. Radford, J. L. Rodriguez, J. C. Waddington, D. Ward, and J. N. Wilson

Phys. Rev. Lett. 77, 1448 (1996) - Published 19 August, 1996

Atomic, Molecular, and Optical Physics

Observation of Hollow Atoms or Ions above Insulator and Metal Surfaces

Briand J.-P., S. Thuriez, G. Giardino, G. Borsoni, M. Froment, M. Eddrief, and C. Sébenne

Phys. Rev. Lett. 77, 1452 (1996) - Published 19 August, 1996

Optical Activity of Anisotropic Achiral Surfaces

Thierry Verbiest, Martti Kauranen, Yves Van Rompaey, and André Persoons

Phys. Rev. Lett. 77, 1456 (1996) - Published 19 August, 1996

Long-Range Predissociation in Two-Color Photoassociation of Ultracold Na Atoms

P. A. Molenaar, P. van der Straten, and H. G. M. Heideman

Phys. Rev. Lett. 77, 1460 (1996) - Published 19 August, 1996

Measurement of the van der Waals Force in an Atomic Mirror

A. Landragin, J.-Y. Courtois, G. Labeyrie, N. Vansteenkiste, C. I. Westbrook, and A. Aspect

Phys. Rev. Lett. 77, 1464 (1996) - Published 19 August, 1996

Self-Organization, Broken Symmetry, and Lasing in an Atomic Vapor: The Interdependence of Gratings and Gain

P. R. Hemmer, N. P. Bigelow, D. P. Katz, M. S. Shahriar, L. DeSalvo, and R. Bonifacio

Phys. Rev. Lett. 77, 1468 (1996) - Published 19 August, 1996

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Gutzwiller's Trace Formula and Spectral Statistics: Beyond the Diagonal Approximation

E. B. Bogomolny and J. P. Keating

Phys. Rev. Lett. 77, 1472 (1996) - Published 19 August, 1996

Energy Extraction and Achievement of the Saturation Limit in a Discharge-Pumped Table-Top Soft X-Ray Amplifier

J. J. Rocca, D. P. Clark, J. L. A. Chilla, and V. N. Shlyaptsev

Phys. Rev. Lett. 77, 1476 (1996) - Published 19 August, 1996

Couette-Taylor Flow in a Dilute Polymer Solution

Alexander Groisman and Victor Steinberg

Phys. Rev. Lett. 77, 1480 (1996) - Published 19 August, 1996

$q$ Divergence of Nonequilibrium Fluctuations and Its Gravity-Induced Frustration in a Temperature Stressed Liquid Mixture

Alberto Vailati and Marzio Giglio

Phys. Rev. Lett. 77, 1484 (1996) - Published 19 August, 1996

Asymmetry of Velocity Increments in Fully Developed Turbulence and the Scaling of Low-Order Moments

K. R. Sreenivasan, S. I. Vainshtein, R. Bhiladvala, I. San Gil, S. Chen, and N. Cao

Phys. Rev. Lett. 77, 1488 (1996) - Published 19 August, 1996

Plasma and Beam Physics

Stimulated Coherent Emission from Short Electron Bunches in Free Space

G. R. M. Robb, N. S. Ginzburg, A. D. R. Phelps, and A. S. Sergeev

Phys. Rev. Lett. 77, 1492 (1996) - Published 19 August, 1996

Observation of Two Ion-Acoustic Waves in a Two-Species Laser-Produced Plasma with Thomson Scattering

S. H. Glenzer, C. A. Back, K. G. Estabrook, R. Wallace, K. Baker, B. J. MacGowan, B. A. Hammel, R. E. Cid, and J. S. De Groot

Phys. Rev. Lett. 77, 1496 (1996) - Published 19 August, 1996

Double-Cross Instability: An Absolute Instability Caused by Counter-Propagating Positive- and Negative-Energy Waves

A. J. Brizard, J. J. Morehead, A. N. Kaufman, and E. R. Tracy

Phys. Rev. Lett. 77, 1500 (1996) - Published 19 August, 1996

Equilibrium and Fluctuations in a Plasma Confined in a Pure Toroidal Field

R. Singh, S. Mahajan, and K. Avinash

Phys. Rev. Lett. 77, 1504 (1996) - Published 19 August, 1996

Condensed Matter: Structure, Etc.

Polarized X-ray Fluorescence as a Probe of Ground State Properties

Michel van Veenendaal, J. B. Goedkoop, and B. T. Thole

Phys. Rev. Lett. 77, 1508 (1996) - Published 19 August, 1996

Phase Separation in Nearly Symmetric Polymer Mixtures

Sanat K. Kumar and Jeffrey D. Weinhold

Phys. Rev. Lett. 77, 1512 (1996) - Published 19 August, 1996

Structure, Barriers, and Relaxation Mechanisms of Kinks in the 90° Partial Dislocation in Silicon

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

Phys. Rev. Lett. 77, 1516 (1996) - Published 19 August, 1996

Elastic Theory Has Zero Radius of Convergence

Alex Buchel and James P. Sethna

Phys. Rev. Lett. 77, 1520 (1996) - Published 19 August, 1996

Critical Diffusivity in Restricted Geometry: Decoupled Mode Approximation

J. K. Bhattacharjee

Phys. Rev. Lett. 77, 1524 (1996) - Published 19 August, 1996

Microscopic Explanation of the Non-Arrhenius Conductivity in Glassy Fast Ionic Conductors

Philipp Maass, Martin Meyer, Armin Bunde, and Wolfgang Dieterich

Phys. Rev. Lett. 77, 1528 (1996) - Published 19 August, 1996

Experimental Observation of Critical Wetting

Karine Ragil, Jacques Meunier, Daniel Broseta, Joseph O. Indekeu, and Daniel Bonn

Phys. Rev. Lett. 77, 1532 (1996) - Published 19 August, 1996

Dewetting Modes of Thin Metallic Films: Nucleation of Holes and Spinodal Dewetting

J. Bischof, D. Scherer, S. Herminghaus, and P. Leiderer

Phys. Rev. Lett. 77, 1536 (1996) - Published 19 August, 1996

hcp and bcc Cu and Pd Films

H. Wormeester, E. Hüger, and E. Bauer

Phys. Rev. Lett. 77, 1540 (1996) - Published 19 August, 1996

Condensed Matter: Electronic Properties, Etc.

Studies of Charged Excitations in $π$ -Conjugated Oligomers and Polymers by Optical Modulation

P. A. Lane, X. Wei, and Z. V. Vardeny

Phys. Rev. Lett. 77, 1544 (1996) - Published 19 August, 1996

Electron-Exchange Processes in the Excitations of NiO(100) Surface $d$ States

B. Fromme, M. Möller, Th. Anschütz, C. Bethke, and E. Kisker

Phys. Rev. Lett. 77, 1548 (1996) - Published 19 August, 1996

Crossover from Critical Orthogonal to Critical Unitary Statistics at the Anderson Transition

M. Batsch, L. Schweitzer, I. Kh. Zharekeshev, and B. Kramer

Phys. Rev. Lett. 77, 1552 (1996) - Published 19 August, 1996

Level Statistics and Localization for Two Interacting Particles in a Random Potential

Dietmar Weinmann and Jean-Louis Pichard

Phys. Rev. Lett. 77, 1556 (1996) - Published 19 August, 1996

Local Isoelectronic Reactivity of Solid Surfaces

Steffen Wilke, Morrel H. Cohen, and Matthias Scheffler

Phys. Rev. Lett. 77, 1560 (1996) - Published 19 August, 1996

Charged “Few-Electron–Single Spatially Separated Hole” Complexes in a Double Quantum Well near a Metal Plate

V. I. Yudson

Phys. Rev. Lett. 77, 1564 (1996) - Published 19 August, 1996

A First-Landau-Level Laughlin/Jain Wave Function for the Fractional Quantum Hall Effect

Joseph N. Ginocchio and W. C. Haxton

Phys. Rev. Lett. 77, 1568 (1996) - Published 19 August, 1996

Internal Excitations and Dissipative Damping of Quantum Hall Skyrmions

H. A. Fertig, L. Brey, R. Côté, and A. H. MacDonald

Phys. Rev. Lett. 77, 1572 (1996) - Published 19 August, 1996

Quantized Hall Currents in the High Field Phase of $α - (BEDT - TTF)_{2} TlHg (SCN)_{4}$

N. Harrison, A. House, M. V. Kartsovnik, A. V. Polisski, J. Singleton, F. Herlach, W. Hayes, and N. D. Kushch

Phys. Rev. Lett. 77, 1576 (1996) - Published 19 August, 1996

Giant Magnetoresistive Effects in a Single Element Magnetic Thin Film

J. F. Gregg, W. Allen, K. Ounadjela, M. Viret, M. Hehn, S. M. Thompson, and J. M. D. Coey

Phys. Rev. Lett. 77, 1580 (1996) - Published 19 August, 1996

Hall Voltage Fluctuations as a Diagnostic of Internal Magnetic Field Fluctuations in High Temperature Superconductors and the Half-Filled Landau Level

L. B. Ioffe, G. B. Lesovik, and A. J. Millis

Phys. Rev. Lett. 77, 1584 (1996) - Published 19 August, 1996

Effect of Disorder on the Vortex-Lattice Melting Transition

E. A. Jagla and C. A. Balseiro

Phys. Rev. Lett. 77, 1588 (1996) - Published 19 August, 1996

Vortex-Loop Unbinding and Flux-Line Lattice Melting in Superconductors

Anh Kiet Nguyen, A. Sudbø, and R. E. Hetzel

Phys. Rev. Lett. 77, 1592 (1996) - Published 19 August, 1996

Plastic Vortex Creep in ${YBa}_{2} {Cu}_{3} O_{7 - x}$ Crystals

Y. Abulafia, A. Shaulov, Y. Wolfus, R. Prozorov, L. Burlachkov, Y. Yeshurun, D. Majer, E. Zeldov, H. Wühl, V. B. Geshkenbein, and V. M. Vinokur

Phys. Rev. Lett. 77, 1596 (1996) - Published 19 August, 1996

Evidence for Extreme Gap Anisotropy in H $o_{0.1}$ $Y_{0.9}$ B $a_{2}$ C $u_{3}$ $O_{7}$ from Neutron Spectroscopy of ${Ho}^{3 +}$

A. T. Boothroyd, A. Mukherjee, and A. P. Murani

Phys. Rev. Lett. 77, 1600 (1996) - Published 19 August, 1996

ERRATA

Salty Water Cerenkov Detectors for Solar Neutrinos

W. C. Haxton

Phys. Rev. Lett. 77, 1662 (1996) - Published 19 August, 1996

Volume 77, Issue 8

LETTERS

General Physics

Gravitation and Astrophysics

Elementary Particles and Fields

Nuclear Physics