Volume 60, Issue 9

D. Reffay-Pikeroen, M. Bernheim, S. Boffi, G. P. Capitani, E. De Sanctis, S. Frullani, F. Garibaldi, A. Gérard, C. Giusti, H. Jackson, A. Magnon, C. Marchand, J. Mougey, J. Morgenstern, F. D. Pacati, J. Picard, S. Turck-Chieze, and P. Vernin

Phys. Rev. Lett. 60, 776 (1988) - Published 29 February, 1988

Observation of a nonspherical pion source in relativistic heavy-ion collisions

A. D. Chacon, J. A. Bistirlich, R. R. Bossingham, H. R. Bowman, C. W. Clawson, K. M. Crowe, T. J. Humanic, J. M. Kurck, C. A. Meyer, J. O. Rasmussen, O. Hashimoto, W. McHarris, J. P. Sullivan, and W. A. Zajc

Phys. Rev. Lett. 60, 780 (1988) - Published 29 February, 1988

Unambiguous imaginary potential in the optical-model description of light heavy-ion elastic scattering

María-Ester Brandan

Phys. Rev. Lett. 60, 784 (1988) - Published 29 February, 1988

Atomic, Molecular, and Optical Physics

Observation of associative ionization of ultracold laser-trapped sodium atoms

P. L. Gould, P. D. Lett, P. S. Julienne, W. D. Phillips, H. R. Thorsheim, and J. Weiner

Phys. Rev. Lett. 60, 788 (1988) - Published 29 February, 1988

Ultrabroadband amplitude squeezing in a semiconductor laser

Susumu Machida and Yoshihisa Yamamoto

Phys. Rev. Lett. 60, 792 (1988) - Published 29 February, 1988

Energy conservation in the picosecond and subpicosecond photoelectric effect

E. Yablonovitch

Phys. Rev. Lett. 60, 795 (1988) - Published 29 February, 1988

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Nonlinear dynamics of the wake of an oscillating cylinder

D. J. Olinger and K. R. Sreenivasan

Phys. Rev. Lett. 60, 797 (1988) - Published 29 February, 1988

Plasma and Beam Physics

Effect of parallel magnetic field gradients on absorption and mode conversion in the ion-cyclotron range of frequencies

D. Smithe, P. Colestock, T. Kammash, and R. Kashuba

Phys. Rev. Lett. 60, 801 (1988) - Published 29 February, 1988

Condensed Matter: Structure, Etc.

Influence of shear on polymer adsorption kinetics

Thomas C. McGlinn, Daniel J. Kuzmenka, and Steve Granick

Phys. Rev. Lett. 60, 805 (1988) - Published 29 February, 1988

Microscopic theory of the structure, thermodynamics, and apparent χ parameter of polymer blends

Kenneth S. Schweizer and John G. Curro

Phys. Rev. Lett. 60, 809 (1988) - Published 29 February, 1988

Structure of the $L_{β}$ phases in a hydrated phosphatidylcholine multimembrane

G. S. Smith, E. B. Sirota, C. R. Safinya, and N. A. Clark

Phys. Rev. Lett. 60, 813 (1988) - Published 29 February, 1988

Condensed Matter: Electronic Properties, Etc.

Ionic contributions to lattice instabilities and phonon dispersion in ${La}_{2}$ ${CuO}_{4}$

R. E. Cohen, W. E. Pickett, L. L. Boyer, and H. Krakauer

Phys. Rev. Lett. 60, 817 (1988) - Published 29 February, 1988

Superconductivity in strongly correlated electronic systems and confinement versus deconfinement phenomenon

P. B. Wiegmann

Phys. Rev. Lett. 60, 821 (1988) - Published 29 February, 1988

Photothermal modulation spectroscopy of multilayered structures of amorphous silicon and amorphous silicon carbide

K. Hattori, T. Mori, H. Okamoto, and Y. Hamakawa

Phys. Rev. Lett. 60, 825 (1988) - Published 29 February, 1988

Observation of ballistic holes

M. Heiblum, K. Seo, H. P. Meier, and T. W. Hickmott

Phys. Rev. Lett. 60, 828 (1988) - Published 29 February, 1988

Evidence for the existence of guided longitudinal acoustic phonons in ZnSe films on GaAs

B. Hillebrands, S. Lee, G. I. Stegeman, H. Cheng, J. E. Potts, and F. Nizzoli

Phys. Rev. Lett. 60, 832 (1988) - Published 29 February, 1988

Fractional angular momentum and magnetic-flux quantization

J. Q. Liang and X. X. Ding

Phys. Rev. Lett. 60, 836 (1988) - Published 29 February, 1988

Long-range correlations in the two-dimensional spin-(1/2 antiferromagnetic Heisenberg model: A quantum Monte Carlo study

Efstratios Manousakis and Román Salvador

Phys. Rev. Lett. 60, 840 (1988) - Published 29 February, 1988

Effect of dissipation on thermal activation in an underdamped Josephson junction: First evidence of a transition between different damping regimes

Paolo Silvestrini, Sergio Pagano, Roberto Cristiano, O. Liengme, and K. E. Gray

Phys. Rev. Lett. 60, 844 (1988) - Published 29 February, 1988

Quantized conductance of point contacts in a two-dimensional electron gas

B. J. van Wees, H. van Houten, C. W. J. Beenakker, J. G. Williamson, L. P. Kouwenhoven, D. van der Marel, and C. T. Foxon

Phys. Rev. Lett. 60, 848 (1988) - Published 29 February, 1988

Anomalous high-field magnetization and negative forced volume magnetostriction in ${Yb}_{1 - x}$ $M_{x}$ ${Cu}_{2}$ (M=In and Ag)—evidence for valence change in high magnetic fields

K. Yoshimura, T. Nitta, M. Mekata, T. Shimizu, T. Sakakibara, T. Goto, and G. Kido

Phys. Rev. Lett. 60, 851 (1988) - Published 29 February, 1988

Cross-Disciplinary Physics

Molecular mechanism of field-inversion electrophoresis

Jean Louis Viovy

Phys. Rev. Lett. 60, 855 (1988) - Published 29 February, 1988

Volume 60, Issue 9

LETTERS

General Physics

Gravitation and Astrophysics

Elementary Particles and Fields