Volume 66, Issue 21

B. E. Matthias, H. E. Ahn, A. Badertscher, F. Chmely, M. Eckhause, V. W. Hughes, K. P. Jungmann, J. R. Kane, S. H. Kettell, Y. Kuang, H.-J. Mundinger, B. Ni, H. Orth, G. zu Putlitz, H. R. Schaefer, M. T. Witkowski, and K. A. Woodle

Phys. Rev. Lett. 66, 2716 (1991) - Published 27 May, 1991

Nuclear Physics

Scaling effective Lagrangians in a dense medium

G. E. Brown and Mannque Rho

Phys. Rev. Lett. 66, 2720 (1991) - Published 27 May, 1991

Atomic, Molecular, and Optical Physics

cw all-optical triple resonance spectroscopy

A. M. Lyyra, H. Wang, T.-J. Whang, W. C. Stwalley, and L. Li

Phys. Rev. Lett. 66, 2724 (1991) - Published 27 May, 1991

Accurate ab initio treatment of low-energy electron collisions with ethylene

B. I. Schneider, T. N. Rescigno, B. H. Lengsfield, III, and C. W. McCurdy

Phys. Rev. Lett. 66, 2728 (1991) - Published 27 May, 1991

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Selective decay and coherent vortices in two-dimensional incompressible turbulence

William H. Matthaeus, W. Troy Stribling, Daniel Martinez, Sean Oughton, and David Montgomery

Phys. Rev. Lett. 66, 2731 (1991) - Published 27 May, 1991

Evolution of vortex statistics in two-dimensional turbulence

G. F. Carnevale, J. C. McWilliams, Y. Pomeau, J. B. Weiss, and W. R. Young

Phys. Rev. Lett. 66, 2735 (1991) - Published 27 May, 1991

Instability of Taylor-Sedov blast waves propagating through a uniform gas

J. Grun, J. Stamper, C. Manka, J. Resnick, R. Burris, J. Crawford, and B. H. Ripin

Phys. Rev. Lett. 66, 2738 (1991) - Published 27 May, 1991

Time-dependent convection induced by broken spatial symmetries

G. Hartung, F. H. Busse, and I. Rehberg

Phys. Rev. Lett. 66, 2742 (1991) - Published 27 May, 1991

Spectral bandwidth in free-electron-laser oscillators

Kwang-Je Kim

Phys. Rev. Lett. 66, 2746 (1991) - Published 27 May, 1991

Condensed Matter: Structure, Etc.

Spatiotemporal intermittency on the sandpile

Ayşe Erzan and Sudeshna Sinha

Phys. Rev. Lett. 66, 2750 (1991) - Published 27 May, 1991

Effect of dilute silica gel on phase separation of a binary mixture

B. J. Frisken, Fabio Ferri, and David S. Cannell

Phys. Rev. Lett. 66, 2754 (1991) - Published 27 May, 1991

Relaxation time of confined liquids under shear

Hsuan-Wei Hu, George A. Carson, and Steve Granick

Phys. Rev. Lett. 66, 2758 (1991) - Published 27 May, 1991

Structure analysis of the Si(111)√3 × √3 R30°-Ag surface

M. Katayama, R. S. Williams, M. Kato, E. Nomura, and M. Aono

Phys. Rev. Lett. 66, 2762 (1991) - Published 27 May, 1991

New mechanism of defect production in metals: A molecular-dynamics study of interstitial-dislocation-loop formation in high-energy displacement cascades

T. Diaz de la Rubia and M. W. Guinan

Phys. Rev. Lett. 66, 2766 (1991) - Published 27 May, 1991

Enhanced surface anharmonicity observed in vibrations on Cu(110)

A. P. Baddorf and E. W. Plummer

Phys. Rev. Lett. 66, 2770 (1991) - Published 27 May, 1991

Hexatic-to-liquid melting transition in two-dimensional magnetic-bubble lattices

R. Seshadri and R. M. Westervelt

Phys. Rev. Lett. 66, 2774 (1991) - Published 27 May, 1991

Condensed Matter: Electronic Properties, Etc.

Anisotropic thermal conductivity of the 2D single quasicrystals: ${Al}_{65}$ ${Ni}_{20}$ ${Co}_{15}$ and ${Al}_{62}$ ${Si}_{3}$ ${Cu}_{20}$ ${Co}_{15}$

Zhang Dian-lin, Cao Shao-chun, Wang Yun-ping, Lu Li, Wang Xue-mei, X. L. Ma, and K. H. Kuo

Phys. Rev. Lett. 66, 2778 (1991) - Published 27 May, 1991

Excitation mechanisms and optical properties of rare-earth ions in semiconductors

Stefan Schmitt-Rink, Chandra M. Varma, and Anthony F. J. Levi

Phys. Rev. Lett. 66, 2782 (1991) - Published 27 May, 1991

Valence-band photoemission from a quantum-dot system

V. L. Colvin, A. P. Alivisatos, and J. G. Tobin

Phys. Rev. Lett. 66, 2786 (1991) - Published 27 May, 1991

Electron pinball and commensurate orbits in a periodic array of scatterers

D. Weiss, M. L. Roukes, A. Menschig, P. Grambow, K. von Klitzing, and G. Weimann

Phys. Rev. Lett. 66, 2790 (1991) - Published 27 May, 1991

Dynamic persistent currents in mesoscopic rings

K. B. Efetov

Phys. Rev. Lett. 66, 2794 (1991) - Published 27 May, 1991

Surface magnetoelastic coupling

S. W. Sun and R. C. O’Handley

Phys. Rev. Lett. 66, 2798 (1991) - Published 27 May, 1991

Quantum dynamics and tunneling of domain walls in ferromagnetic insulators

P. C. E. Stamp

Phys. Rev. Lett. 66, 2802 (1991) - Published 27 May, 1991

Dielectric relaxation of the pinned spin-density wave in (TMTSF $)_{2}$ ${PF}_{6}$

G. Mihály, Yong Kim, and G. Grüner

Phys. Rev. Lett. 66, 2806 (1991) - Published 27 May, 1991

Nuclear ferromagnetism in a perovskite structure

P. Bonamour, V. Bouffard, C. Fermon, M. Goldman, J. F. Jacquinot, and G. Saux

Phys. Rev. Lett. 66, 2810 (1991) - Published 27 May, 1991

Heavy-fermion behavior in a negative-U Anderson model

A. Taraphder and P. Coleman

Phys. Rev. Lett. 66, 2814 (1991) - Published 27 May, 1991

Transport of electron-hole pairs in arrays of small tunnel junctions

D. V. Averin, A. N. Korotkov, and Yu. V. Nazarov

Phys. Rev. Lett. 66, 2818 (1991) - Published 27 May, 1991

‘‘Low-temperature’’ behavior of a phase-slip center

Xiaoguang Yang and Reinhard Tidecks

Phys. Rev. Lett. 66, 2822 (1991) - Published 27 May, 1991

Model system for vortex motion in coupled two-dimensional type-II superconductors

W. R. White, A. Kapitulnik, and M. R. Beasley

Phys. Rev. Lett. 66, 2826 (1991) - Published 27 May, 1991

Superconductivity at 28 K in ${Rb}_{x}$ $C_{60}$

M. J. Rosseinsky, A. P. Ramirez, S. H. Glarum, D. W. Murphy, R. C. Haddon, A. F. Hebard, T. T. M. Palstra, A. R. Kortan, S. M. Zahurak, and A. V. Makhija

Phys. Rev. Lett. 66, 2830 (1991) - Published 27 May, 1991

COMMENTS

Comment on ‘‘Collapse and revival of the state vector in the Jaynes-Cummings model: An example of state preparation by a quantum apparatus’’

Simon J. D. Phoenix and P. L. Knight

Phys. Rev. Lett. 66, 2833 (1991) - Published 27 May, 1991

Comment on ‘‘X-ray-photoelectron diffraction from a free-electron-metal valence band: Evidence for hole-state localization’’

D. D. Sarma, W. Speier, and J. F. van Acker

Phys. Rev. Lett. 66, 2834 (1991) - Published 27 May, 1991

Osterwalder et al. reply

J. Osterwalder, T. Greber, L. Schlapbach, and S. Hüfner

Phys. Rev. Lett. 66, 2835 (1991) - Published 27 May, 1991

ERRATA

Surface Extended-X-Ray-Absorption Fine Structure and Scanning Tunneling Microscopy of Si(001) 2×1-Sb

M. Richter, J. C. Woicik, J. Nogami, P. Pianetta, K. E. Miyano, A. A. Baski, T. Kendelewicz, C. E. Bouldin, W. E. Spicer, C. F. Quate, and I. Lindau

Phys. Rev. Lett. 66, 2836 (1991) - Published 27 May, 1991

Evidence for the Existence of Two-Phonon Collective Excitations in Deformed Nuclei

H. G. Börner, J. Jolie, S. J. Robinson, B. Krusche, R. Piepenbring, R. F. Casten, A. Aprahamian, and J. P. Draayer

Phys. Rev. Lett. 66, 2837 (1991) - Published 27 May, 1991