Volume 77, Issue 2

C. M. Petrache, D. Bazzacco, S. Lunardi, C. Rossi Alvarez, R. Venturelli, P. Pavan, N. H. Medina, M. N. Rao, R. Burch, G. de Angelis, A. Gadea, G. Maron, D. R. Napoli, L. Zhu, and R. Wyss

Phys. Rev. Lett. 77, 239 (1996) - Published 8 July, 1996

Atomic, Molecular, and Optical Physics

Diagnostic Value of Photofragment Anisotropy Measurements: Predissociation Mechanisms of the $e^{1} Π_{u}$ State of $N_{2}$

B. Buijsse, E. R. Wouters, and W. J. van der Zande

Phys. Rev. Lett. 77, 243 (1996) - Published 8 July, 1996

Ab Initio Photoabsorption Spectra and Structures of Small Semiconductor and Metal Clusters

Angel Rubio, J. A. Alonso, X. Blase, L. C. Balbás, and Steven G. Louie

Phys. Rev. Lett. 77, 247 (1996) - Published 8 July, 1996

Experimental Evidence for the Entropy Effect in Coulombic Cluster Fission

C. Bréchignac, Ph. Cahuzac, M. de Frutos, N. Kebaïli, A. Sarfati, and V. Akulin

Phys. Rev. Lett. 77, 251 (1996) - Published 8 July, 1996

Two-Photon Spectroscopy of Trapped Atomic Hydrogen

Claudio L. Cesar, Dale G. Fried, Thomas C. Killian, Adam D. Polcyn, Jon C. Sandberg, Ite A. Yu, Thomas J. Greytak, Daniel Kleppner, and John M. Doyle

Phys. Rev. Lett. 77, 255 (1996) - Published 8 July, 1996

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Invariant Measures as Lagrangian Variables: Their Application to Time Series Analysis

Guillermo J. Ortega

Phys. Rev. Lett. 77, 259 (1996) - Published 8 July, 1996

Quantum Chaos and the Limits of Semiclassical Prediction

Rainer Scharf and Bala Sundaram

Phys. Rev. Lett. 77, 263 (1996) - Published 8 July, 1996

Winding Number Instability in the Phase-Turbulence Regime of the Complex Ginzburg-Landau Equation

R. Montagne, E. Hernández-García, and M. San Miguel

Phys. Rev. Lett. 77, 267 (1996) - Published 8 July, 1996

Interacting Self-Guided Beams viewed as Particles: Lorentz Force Derivation

D. J. Mitchell, A. W. Snyder, and L. Poladian

Phys. Rev. Lett. 77, 271 (1996) - Published 8 July, 1996

Force Distributions in Dense Two-Dimensional Granular Systems

Farhang Radjai, Michel Jean, Jean-Jacques Moreau, and Stéphane Roux

Phys. Rev. Lett. 77, 274 (1996) - Published 8 July, 1996

Tribology of Sliding Elastic Media

Dinko Cule and Terence Hwa

Phys. Rev. Lett. 77, 278 (1996) - Published 8 July, 1996

Short-Wave Limit of Hydrodynamics: A Soluble Example

Alexander N. Gorban and Iliya V. Karlin

Phys. Rev. Lett. 77, 282 (1996) - Published 8 July, 1996

Taylor Vortices in Wide Spherical Shells

M. Liu, C. Blohm, C. Egbers, P. Wulf, and H. J. Rath

Phys. Rev. Lett. 77, 286 (1996) - Published 8 July, 1996

Experimental Investigation of the Sedimentation of a Dilute Fiber Suspension

Benjamin Herzhaft, Élisabeth Guazzelli, Michael B. Mackaplow, and Eric S. G. Shaqfeh

Phys. Rev. Lett. 77, 290 (1996) - Published 8 July, 1996

Plasma and Beam Physics

Experimental Observation of rf Driven Plasma Flow in the Phaedrus-T Tokamak

S. Wukitch, C. Litwin, M. Harper, R. Parker, and N. Hershkowitz

Phys. Rev. Lett. 77, 294 (1996) - Published 8 July, 1996

Temporally Resolved Measurement of Electron Densities $(> 10^{23} {cm}^{- 3})$ with High Harmonics

W. Theobald, R. Häßner, C. Wülker, and R. Sauerbrey

Phys. Rev. Lett. 77, 298 (1996) - Published 8 July, 1996

Condensed Matter: Structure, Etc.

Liquid-Crystalline Phases of Semiflexible Diblock Copolymer Melts

Roland R. Netz and M. Schick

Phys. Rev. Lett. 77, 302 (1996) - Published 8 July, 1996

Force-Extension Relation and Plateau Modulus for Wormlike Chains

Klaus Kroy and Erwin Frey

Phys. Rev. Lett. 77, 306 (1996) - Published 8 July, 1996

Surface-Mediated Disorder in Aligned Liquid Crystal Films Caused by Collisions with He

Karen L. Randall, Y. B. Fan, Olivier Michel, M. Cynthia Goh, and D. J. Donaldson

Phys. Rev. Lett. 77, 310 (1996) - Published 8 July, 1996

Pressure-Induced Crossover from Long- to Short-Range Order in Compositionally Disordered Soft Mode Ferroelectrics

G. A. Samara

Phys. Rev. Lett. 77, 314 (1996) - Published 8 July, 1996

Fast Dynamics of Glass-Forming Glycerol Studied by Dielectric Spectroscopy

P. Lunkenheimer, A. Pimenov, M. Dressel, Yu. G. Goncharov, R. Böhmer, and A. Loidl

Phys. Rev. Lett. 77, 318 (1996) - Published 8 July, 1996

Observation of Ferromagnetic Ordering in hcp $^{3}$ He

T. Lang, P. L. Moyland, D. A. Sergatskov, E. D. Adams, and Y. Takano

Phys. Rev. Lett. 77, 322 (1996) - Published 8 July, 1996

Measurement of Interface-Induced Optical Anisotropies of a Semiconductor Heterostructure: ZnSe $/$ GaAs(100)

T. Yasuda, K. Kimura, S. Miwa, L. H. Kuo, C. G. Jin, K. Tanaka, and T. Yao

Phys. Rev. Lett. 77, 326 (1996) - Published 8 July, 1996

Striped Phase and Temperature Dependent Step Shape Transition on Highly B-Doped Si(001)-( $2 \times 1$ ) Surfaces

D. E. Jones, J. P. Pelz, Y. Hong, E. Bauer, and I. S. T. Tsong

Phys. Rev. Lett. 77, 330 (1996) - Published 8 July, 1996

Condensed Matter: Electronic Properties, Etc.

Exchange-Coupled Spin-Fluctuation Theory: Application to Fe, Co, and Ni

Michael Uhl and Jürgen Kübler

Phys. Rev. Lett. 77, 334 (1996) - Published 8 July, 1996

Quantum Gap Solitons and Many-Polariton–Atom Bound States in Dispersive Medium and Photonic Band Gap

Valery I. Rupasov and M. Singh

Phys. Rev. Lett. 77, 338 (1996) - Published 8 July, 1996

Zeeman Effect in Parabolic Quantum Dots

R. Rinaldi, P. V. Giugno, R. Cingolani, H. Lipsanen, M. Sopanen, J. Tulkki, and J. Ahopelto

Phys. Rev. Lett. 77, 342 (1996) - Published 8 July, 1996

Valence-Electron Resonances in Alkali-Metal Overlayers Observed via Photoemission Line-Shape Changes

A. Carlsson, D. Claesson, S.-Å. Lindgren, and L. Walldén

Phys. Rev. Lett. 77, 346 (1996) - Published 8 July, 1996

Coulomb Blockade as a Noninvasive Probe of Local Density of States

M. Field, C. G. Smith, M. Pepper, K. M. Brown, E. H. Linfield, M. P. Grimshaw, D. A. Ritchie, and G. A. C. Jones

Phys. Rev. Lett. 77, 350 (1996) - Published 8 July, 1996

Shell Structure and Electronic Excitations of Quantum Dots in a Magnetic Field Probed by Inelastic Light Scattering

D. J. Lockwood, P. Hawrylak, P. D. Wang, C. M. Sotomayor Torres, A. Pinczuk, and B. S. Dennis

Phys. Rev. Lett. 77, 354 (1996) - Published 8 July, 1996

Electron-Phonon Interactions on a Single-Branch Quantum Hall Edge

O. Heinonen and Sebastian Eggert

Phys. Rev. Lett. 77, 358 (1996) - Published 8 July, 1996

Logarithmic Temperature Dependence of Conductivity at Half Filled Landau Level

D. V. Khveshchenko

Phys. Rev. Lett. 77, 362 (1996) - Published 8 July, 1996

Sign Reversals of the Quantum Hall Effect in Quasi-1D Conductors

Dražen Zanchi and Gilles Montambaux

Phys. Rev. Lett. 77, 366 (1996) - Published 8 July, 1996

Incommensurate One-Dimensional Fluctuations in ${YBa}_{2} {Cu}_{3} O_{6.93}$

H. A. Mook, P. Dai, K. Salama, D. Lee, F. Doǧan, G. Aeppli, A. T. Boothroyd, and M. E. Mostoller

Phys. Rev. Lett. 77, 370 (1996) - Published 8 July, 1996

Bulk Superconductivity at 10 K in the Layered Compounds $Y_{2} C_{2} I_{2}$ and $Y_{2} C_{2} {Br}_{2}$

R. W. Henn, W. Schnelle, R. K. Kremer, and A. Simon

Phys. Rev. Lett. 77, 374 (1996) - Published 8 July, 1996

Mixed Phase of a Longitudinal Ferromagnetism and a Transverse Antiferromagnetism in a Site-Random Heisenberg Model

F. Matsubara, T. Tamiya, and T. Shirakura

Phys. Rev. Lett. 77, 378 (1996) - Published 8 July, 1996

Effect of Chiral Domain Walls on the Specific Heat of Gd(hfac $)_{3}$ NITR ( $R = E t h y l$ , Isopropyl, Methyl, Phenyl) Molecular Magnetic Chains

F. Bartolomé, J. Bartolomé, C. Benelli, A. Caneschi, D. Gatteschi, C. Paulsen, M. G. Pini, A. Rettori, R. Sessoli, and Y. Volokitin

Phys. Rev. Lett. 77, 382 (1996) - Published 8 July, 1996

Deviations from Drude Response in Low-Dimensional Metals: Electrodynamics of the Metallic State of (TMTSF $)_{2}$ P $F_{6}$

M. Dressel, A. Schwartz, G. Grüner, and L. Degiorgi

Phys. Rev. Lett. 77, 398 (1996) - Published 8 July, 1996

COMMENTS

Comment on “Anomalous Spin Diffusion in a Two-Dimensional Percolating Ising Antiferromagnet”

Stephen W. Lovesey

Phys. Rev. Lett. 77, 402 (1996) - Published 8 July, 1996

Ikeda, Itoh, and Adams Reply:

Hironobu Ikeda, Sinichi Itoh, and Mark A. Adams

Phys. Rev. Lett. 77, 403 (1996) - Published 8 July, 1996

Comment on “Six-Dimensional Quantum Dynamics of Adsorption and Desorption of $H_{2}$ at Pd(100): Steering and Steric Effects”

Charles T. Rettner and Daniel J. Auerbach

Phys. Rev. Lett. 77, 404 (1996) - Published 8 July, 1996

ERRATA

Nature of Phase Transitions of Superconducting Wire Networks in a Magnetic Field

X. S. Ling, H. J. Lezec, M. J. Higgins, J. S. Tsai, J. Fujita, H. Numata, Y. Nakamura, Y. Ochiai, Chao Tang, P. M. Chaikin, and S. Bhattacharya

Phys. Rev. Lett. 77, 410 (1996) - Published 8 July, 1996