Volume 77, Issue 9

A. G. Smith, J. L. Durell, W. R. Phillips, M. A. Jones, M. Leddy, W. Urban, B. J. Varley, I. Ahmad, L. R. Morss, M. Bentaleb, A. Guessous, E. Lubkiewicz, N. Schulz, and R. Wyss

Phys. Rev. Lett. 77, 1711 (1996) - Published 26 August, 1996

QED Corrections of $O (m c^{2} α^{7} \ln α)$ to the Fine Structure Splittings of Helium and He-like Ions

Tao Zhang, Zong-Chao Yan, and G. W. F. Drake

Phys. Rev. Lett. 77, 1715 (1996) - Published 26 August, 1996

Critical Analysis of Non-Nuclear Electron-Density Maxima and the Maximum Entropy Method

R. Y. de Vries, W. J. Briels, and D. Feil

Phys. Rev. Lett. 77, 1719 (1996) - Published 26 August, 1996

Differential Double Ionization of He by Compton Photons and Charged Particles at Large Energy Transfers

J. Wang, J. H. McGuire, J. Burgdörfer, and Y. Qiu

Phys. Rev. Lett. 77, 1723 (1996) - Published 26 August, 1996

Atomic Transport in an Optical Lattice: An Investigation through Polarization-Selective Intensity Correlations

C. Jurczak, B. Desruelle, K. Sengstock, J. -Y. Courtois, C. I. Westbrook, and A. Aspect

Phys. Rev. Lett. 77, 1727 (1996) - Published 26 August, 1996

Spatial Mode Control of High-Order Harmonics

Ian Mercer, Eric Mevel, Raoul Zerne, Anne L'Huillier, Philippe Antoine, and C. -G. Wahlström

Phys. Rev. Lett. 77, 1731 (1996) - Published 26 August, 1996

Measurement of Charge Exchange between $H_{2}$ and Low-Energy Ions with Charge States $35 \leq q \leq 80$

B. R. Beck, J. Steiger, G. Weinberg, D. A. Church, J. McDonald, and D. Schneider

Phys. Rev. Lett. 77, 1735 (1996) - Published 26 August, 1996

Field Commutation Relations in Optical Cavities

Stephen M. Barnett, Claire R. Gilson, Bruno Huttner, and Nobuyuki Imoto

Phys. Rev. Lett. 77, 1739 (1996) - Published 26 August, 1996

Nonadiabatic Effects in High-Harmonic Generation with Ultrashort Pulses

Ivan P. Christov, J. Zhou, J. Peatross, A. Rundquist, M. M. Murnane, and H. C. Kapteyn

Phys. Rev. Lett. 77, 1743 (1996) - Published 26 August, 1996

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Experimental Demonstration of Antimonotonicity: The Concurrent Creation and Destruction of Periodic Orbits in a Driven Nonlinear Electronic Resonator

Timothy C. Newell, Vassilios Kovanis, and Athanasios Gavrielides

Phys. Rev. Lett. 77, 1747 (1996) - Published 26 August, 1996

Intermittent Loss of Synchronization in Coupled Chaotic Oscillators: Toward a New Criterion for High-Quality Synchronization

Daniel J. Gauthier and Joshua C. Bienfang

Phys. Rev. Lett. 77, 1751 (1996) - Published 26 August, 1996

Experimental Determination of a Topological Invariant in a Pattern of Optical Singularities

Alain Joets and Roland Ribotta

Phys. Rev. Lett. 77, 1755 (1996) - Published 26 August, 1996

Long Internal Waves of Finite Amplitude

Wooyoung Choi and Roberto Camassa

Phys. Rev. Lett. 77, 1759 (1996) - Published 26 August, 1996

Plasma and Beam Physics

Spin Flipping through an Intrinsic Depolarizing Resonance by Strengthening It

D. A. Crandell, V. A. Anferov, B. B. Blinov, D. D. Caussyn, Ya. S. Derbenev, S -Q. Hu, S. V. Koutin, A. D. Krisch, T. J. Liu, R. A. Phelps, L. G. Ratner, V. K. Wong, C. M. Chu, S. Y. Lee, T. Rinckel, P. Schwandt, F. Sperisen, E. J. Stephenson, B. von Przewoski, and M. Berglund

Phys. Rev. Lett. 77, 1763 (1996) - Published 26 August, 1996

Hybrid Simulation of the Nonlinear Evolution of a Collisionless, Large Larmor Radius $Z$ Pinch

T. D. Arber

Phys. Rev. Lett. 77, 1766 (1996) - Published 26 August, 1996

Condensed Matter: Structure, Etc.

Observation of an Opticlike Phase Mode in an Antiferroelectric Liquid Crystal

I. Muševič, A. Rastegar, Mojca Čepič, B. Žekš, Martin Čopič, D. Moro, and G. Heppke

Phys. Rev. Lett. 77, 1769 (1996) - Published 26 August, 1996

Kinetics and Jamming Coverage in a Random Sequential Adsorption of Polymer Chains

Jian-Sheng Wang and Ras B. Pandey

Phys. Rev. Lett. 77, 1773 (1996) - Published 26 August, 1996

Electronic Structure of Icosahedral Alloys Studied by Ultrahigh Energy Resolution Photoemission Spectroscopy

Z. M. Stadnik, D. Purdie, M. Garnier, Y. Baer, A. -P. Tsai, A. Inoue, K. Edagawa, and S. Takeuchi

Phys. Rev. Lett. 77, 1777 (1996) - Published 26 August, 1996

"Hidden" High-to-Low Cristobalite Type Transition in HgSe and HgTe at High Pressure

M. I. McMahon, R. J. Nelmes, H. Liu, and S. A. Belmonte

Phys. Rev. Lett. 77, 1781 (1996) - Published 26 August, 1996

Network Approach to Void Percolation in a Pack of Unequal Spheres

S. C. van der Marck

Phys. Rev. Lett. 77, 1785 (1996) - Published 26 August, 1996

Order-Parameter Relaxation Times of Finite Three-Dimensional Ising-like Systems

W. Koch, V. Dohm, and D. Stauffer

Phys. Rev. Lett. 77, 1789 (1996) - Published 26 August, 1996

Heat Capacity Anomalies of Superfluid ${}^{4}{He}$ under the Influence of a Counterflow near $T_{λ}$

Talso C. P. Chui, David L. Goodstein, Alexa W. Harter, and Ranjan Mukhopadhyay

Phys. Rev. Lett. 77, 1793 (1996) - Published 26 August, 1996

Film/Substrate Orientation Relationship in the $AIN / 6 H$ -SiC Epitaxial System

Susanne Stemmer, Pirouz Pirouz, Yuichi Ikuhara, and R. F. Davis

Phys. Rev. Lett. 77, 1797 (1996) - Published 26 August, 1996

Direct Measurements of Free Crystal Growth in Deeply Undercooled Melts of Semiconducting Materials

D. Li and D. M. Herlach

Phys. Rev. Lett. 77, 1801 (1996) - Published 26 August, 1996

Condensed Matter: Electronic Properties, Etc.

First-Principles Calculation of the Anomalous Perpendicular Anisotropy in a Co Monolayer on Au(111)

B. Újfalussy, L. Szunyogh, P. Bruno, and P. Weinberger

Phys. Rev. Lett. 77, 1805 (1996) - Published 26 August, 1996

Momentum-Dependent Charge Transfer Excitations in ${Sr}_{2}$ Cu $O_{2}$ ${Cl}_{2}$ Angle-Resolved Electron Energy Loss Spectroscopy

Y. Y. Wang, F. C. Zhang, V. P. Dravid, K. K. Ng, M. V. Klein, S. E. Schnatterly, and L. L. Miller

Phys. Rev. Lett. 77, 1809 (1996) - Published 26 August, 1996

Evidence for a Bilayer Quantum Wigner Solid

H. C. Manoharan, Y. W. Suen, M. B. Santos, and M. Shayegan

Phys. Rev. Lett. 77, 1813 (1996) - Published 26 August, 1996

Magnetoresistance of Two-Dimensional Fermions in a Random Magnetic Field

D. V. Khveshchenko

Phys. Rev. Lett. 77, 1817 (1996) - Published 26 August, 1996

Solution of an ac Kondo Model

Avraham Schiller and Selman Hershfield

Phys. Rev. Lett. 77, 1821 (1996) - Published 26 August, 1996

Destruction of Conductance Fluctuations in a Dirty Wire

Ningjia Zhu, Hong Guo, and R. Harris

Phys. Rev. Lett. 77, 1825 (1996) - Published 26 August, 1996

Giant Optical Anisotropy of Semiconductor Heterostructures with No Common Atom and the Quantum-Confined Pockels Effect

Olivier Krebs and Paul Voisin

Phys. Rev. Lett. 77, 1829 (1996) - Published 26 August, 1996

New Class of Resonances at the Edge of the Two-Dimensional Electron Gas

N. B. Zhitenev, M. Brodsky, R. C. Ashoori, and M. R. Melloch

Phys. Rev. Lett. 77, 1833 (1996) - Published 26 August, 1996

Coexistence of Superconductivity and Localization in ${Bi}_{2} {Sr}_{2} ({Ca}_{z}, \Pr_{1 - z}) {Cu}_{2} O_{8 + y}$

B. Beschoten, S. Sadewasser, G. Güntherodt, and C. Quitmann

Phys. Rev. Lett. 77, 1837 (1996) - Published 26 August, 1996

Theory of Scanning Tunneling Microscopy Probe of Impurity States in a $D$ -Wave Superconductor

M. I. Salkola, A. V. Balatsky, and D. J. Scalapino

Phys. Rev. Lett. 77, 1841 (1996) - Published 26 August, 1996

Glassy Motion of Elastic Manifolds

Valerii M. Vinokur, M. Cristina Marchetti, and Lee-Wen Chen

Phys. Rev. Lett. 77, 1845 (1996) - Published 26 August, 1996

Nonmagnetic Impurity Scattering in a $d_{x^{2} - y^{2}}$ Superconductor near a Van Hove Point: Zn versus Ni in the Cuprates

R. Fehrenbacher

Phys. Rev. Lett. 77, 1849 (1996) - Published 26 August, 1996

Optical Conductivity of High $T_{c}$ Superconductors: From Underdoped to Overdoped

A. V. Puchkov, P. Fournier, T. Timusk, and N. N. Kolesnikov

Phys. Rev. Lett. 77, 1853 (1996) - Published 26 August, 1996

Possible Origin for Oscillatory Superconducting Transition Temperature in Superconductor/Ferromagnet Multilayers

Th. Mühge, N. N. Garif'yanov, Yu. V. Goryunov, G. G. Khaliullin, L. R. Tagirov, K. Westerholt, I. A. Garifullin, and H. Zabel

Phys. Rev. Lett. 77, 1857 (1996) - Published 26 August, 1996

NMR Evidence for a Magnetic Soliton Lattice in the High-Field Phase of CuGe $O_{3}$

Y. Fagot-Revurat, M. Horvatić, C. Berthier, P. Ségransan, G. Dhalenne, and A. Revcolevschi

Phys. Rev. Lett. 77, 1861 (1996) - Published 26 August, 1996

Monte Carlo Study of Correlations in Quantum Spin Ladders

M. Greven, R. J. Birgeneau, and U. -J. Wiese

Phys. Rev. Lett. 77, 1865 (1996) - Published 26 August, 1996

Ferromagnetic Ordering and Unusual Magnetic Ion Dynamics in ${La}_{0.67}$ ${Ca}_{0.33}$ Mn $O_{3}$

R. H. Heffner, L. P. Le, M. F. Hundley, J. J. Neumeier, G. M. Luke, K. Kojima, B. Nachumi, Y. J. Uemura, D. E. MacLaughlin, and S -W. Cheong

Phys. Rev. Lett. 77, 1869 (1996) - Published 26 August, 1996

Nucleation of Magnetization Reversal in Individual Nanosized Nickel Wires

W. Wernsdorfer, B. Doudin, D. Mailly, K. Hasselbach, A. Benoit, J. Meier, J. -Ph. Ansermet, and B. Barbara

Phys. Rev. Lett. 77, 1873 (1996) - Published 26 August, 1996

Frequency Shifts of the Internal Phonon Modes in ${La}_{0.7}$ ${Ca}_{0.3}$ Mn $O_{3}$

K. H. Kim, J. Y. Gu, H. S. Choi, G. W. Park, and T. W. Noh

Phys. Rev. Lett. 77, 1877 (1996) - Published 26 August, 1996

Singlet Intrachain Exciton Generation and Decay in Poly( $p$ -phenylenevinylene)

N. T. Harrison, G. R. Hayes, R. T. Phillips, and R. H. Friend

Phys. Rev. Lett. 77, 1881 (1996) - Published 26 August, 1996

Conditions of Elaboration of Luminescent Porous Silicon from Hydrogenated Amorphous Silicon

R. B. Wehrspohn, J. -N. Chazalviel, F. Ozanam, and I. Solomon

Phys. Rev. Lett. 77, 1885 (1996) - Published 26 August, 1996

Local Excitation, Scattering, and Interference of Surface Plasmons

B. Hecht, H. Bielefeldt, L. Novotny, Y. Inouye, and D. W. Pohl

Phys. Rev. Lett. 77, 1889 (1996) - Published 26 August, 1996

Diabatic Energy Level Confluence: The Mechanism of Negative Ion Conversion of Neutral Atoms in Grazing Scattering from Insulator Surfaces

A. G. Borisov, V. Sidis, and H. Winter

Phys. Rev. Lett. 77, 1893 (1996) - Published 26 August, 1996

ERRATA

Index of Refraction for an Optical Medium with Clamped Quantum Phase

J. H. Eberly, A. Rahman, and R. Grobe

Phys. Rev. Lett. 77, 1912 (1996) - Published 26 August, 1996

Volume 77, Issue 9

LETTERS

General Physics

Gravitation and Astrophysics

Elementary Particles and Fields

Nuclear Physics

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Plasma and Beam Physics

Condensed Matter: Structure, Etc.

Condensed Matter: Electronic Properties, Etc.

Cross-Disciplinary Physics

ERRATA