Volume 67, Issue 12

D. R. Bowman, G. F. Peaslee, R. T. de Souza, N. Carlin, C. K. Gelbke, W. G. Gong, Y. D. Kim, M. A. Lisa, W. G. Lynch, L. Phair, M. B. Tsang, C. Williams, N. Colonna, K. Hanold, M. A. McMahan, G. J. Wozniak, L. G. Moretto, and W. A. Friedman

Phys. Rev. Lett. 67, 1527 (1991) - Published 16 September, 1991

Atomic, Molecular, and Optical Physics

Chemical dependence of core-level linewidths and ligand-field splittings: High-resolution core-level photoelectron spectra of I 4d levels

J. N. Cutler, G. M. Bancroft, D. G. Sutherland, and K. H. Tan

Phys. Rev. Lett. 67, 1531 (1991) - Published 16 September, 1991

Plasma and Beam Physics

Theory of shear suppression of edge turbulence by externally driven radio-frequency waves

G. G. Craddock and P. H. Diamond

Phys. Rev. Lett. 67, 1535 (1991) - Published 16 September, 1991

Condensed Matter: Structure, Etc.

Evidence of pairing and its role in the recombinative desorption of hydrogen from the Si(100)-2×1 surface

John J. Boland

Phys. Rev. Lett. 67, 1539 (1991) - Published 16 September, 1991

Atomic resolution in lensless low-energy electron holography

Hans-Werner Fink, Heinz Schmid, Hans Jürgen Kreuzer, and Andrzej Wierzbicki

Phys. Rev. Lett. 67, 1543 (1991) - Published 16 September, 1991

Excitons, phonons, and interfaces in GaAs/AlAs quantum-well structures

D. Gammon, B. V. Shanabrook, and D. S. Katzer

Phys. Rev. Lett. 67, 1547 (1991) - Published 16 September, 1991

Transition to chaos in directional solidification

K. Kassner, C. Misbah, and H. Müller-Krumbhaar

Phys. Rev. Lett. 67, 1551 (1991) - Published 16 September, 1991

Surface amplitude ratios near a critical end point

Bruce M. Law

Phys. Rev. Lett. 67, 1555 (1991) - Published 16 September, 1991

Limiting behavior of ac conductivity in ionically conducting crystals and glasses: A new universality

W. K. Lee, J. F. Liu, and A. S. Nowick

Phys. Rev. Lett. 67, 1559 (1991) - Published 16 September, 1991

Phase transitions and excitation spectrum of submonolayer potassium on graphite

Z. Y. Li, K. M. Hock, and R. E. Palmer

Phys. Rev. Lett. 67, 1562 (1991) - Published 16 September, 1991

Order-parameter kinetics in the liquid-gas coexistence region of Ar monolayers physisorbed on graphite

H. Mannebach, U. G. Volkmann, J. Faul, and K. Knorr

Phys. Rev. Lett. 67, 1566 (1991) - Published 16 September, 1991

Monopole-antimonopole annihilation in a nematic liquid crystal

Andrew Pargellis, Neil Turok, and Bernard Yurke

Phys. Rev. Lett. 67, 1570 (1991) - Published 16 September, 1991

Drag force on a line defect moving through an otherwise undisturbed field: Disclination line in a nematic liquid crystal

G. Ryskin and M. Kremenetsky

Phys. Rev. Lett. 67, 1574 (1991) - Published 16 September, 1991

Instability of Taylor-Couette flow of helium II

Chris J. Swanson and Russell J. Donnelly

Phys. Rev. Lett. 67, 1578 (1991) - Published 16 September, 1991

Atomic-force-microscopy observations of tracks induced by swift Kr ions in mica

F. Thibaudau, J. Cousty, E. Balanzat, and S. Bouffard

Phys. Rev. Lett. 67, 1582 (1991) - Published 16 September, 1991

Nonergodicity parameters of colloidal glasses

W. van Megen, S. M. Underwood, and P. N. Pusey

Phys. Rev. Lett. 67, 1586 (1991) - Published 16 September, 1991

Morphology and rate of fracture in chemical decomposition of solids

B. I. Yakobson

Phys. Rev. Lett. 67, 1590 (1991) - Published 16 September, 1991

Structural distortions in metal clusters

Jae-Yel Yi, Dirk J. Oh, and J. Bernholc

Phys. Rev. Lett. 67, 1594 (1991) - Published 16 September, 1991

Calculation of the critical exponents by a renormalization of the Ornstein-Zernike equation

Q. Zhang and J. P. Badiali

Phys. Rev. Lett. 67, 1598 (1991) - Published 16 September, 1991

Condensed Matter: Electronic Properties, Etc.

Oscillatory coupling between ferromagnetic layers separated by a nonmagnetic metal spacer

P. Bruno and C. Chappert

Phys. Rev. Lett. 67, 1602 (1991) - Published 16 September, 1991

Remanent magnetization of a simple ferromagnet

R. V. Chamberlin and F. Holtzberg

Phys. Rev. Lett. 67, 1606 (1991) - Published 16 September, 1991

Electronic structure of crystalline $K_{6}$ $C_{60}$

Steven C. Erwin and Mark R. Pederson

Phys. Rev. Lett. 67, 1610 (1991) - Published 16 September, 1991

Observation of fractional spin S=1/2 on open ends of S=1 linear antiferromagnetic chains: Nonmagnetic doping

S. H. Glarum, S. Geschwind, K. M. Lee, M. L. Kaplan, and J. Michel

Phys. Rev. Lett. 67, 1614 (1991) - Published 16 September, 1991

Electric-field domains in semiconductor superlattices: A novel system for tunneling between 2D systems

H. T. Grahn, R. J. Haug, W. Müller, and K. Ploog

Phys. Rev. Lett. 67, 1618 (1991) - Published 16 September, 1991

‘‘γ-α’’ phase transition of monolayer Ce on W(110)

C. Gu, X. Wu, C. G. Olson, and D. W. Lynch

Phys. Rev. Lett. 67, 1622 (1991) - Published 16 September, 1991

Quantized current in a quantum-dot turnstile using oscillating tunnel barriers

L. P. Kouwenhoven, A. T. Johnson, N. C. van der Vaart, C. J. P. M. Harmans, and C. T. Foxon

Phys. Rev. Lett. 67, 1626 (1991) - Published 16 September, 1991

Low-frequency noise in the reentrant insulating phase around the 1/5 fractional quantum Hall liquid

Yuan P. Li, T. Sajoto, L. W. Engel, D. C. Tsui, and M. Shayegan

Phys. Rev. Lett. 67, 1630 (1991) - Published 16 September, 1991

Large a-b anisotropy of the expansivity anomaly at $T_{c}$ in untwinned ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$

C. Meingast, O. Kraut, T. Wolf, H. Wühl, A. Erb, and G. Müller-Vogt

Phys. Rev. Lett. 67, 1634 (1991) - Published 16 September, 1991

Origin of the band gap in the negative charge-transfer-energy compound ${NaCuO}_{2}$

T. Mizokawa, H. Namatame, A. Fujimori, K. Akeyama, H. Kondoh, H. Kuroda, and N. Kosugi

Phys. Rev. Lett. 67, 1638 (1991) - Published 16 September, 1991

Direct magneto-optical observation of a quantum confined one-dimensional electron gas

A. S. Plaut, H. Lage, P. Grambow, D. Heitmann, K. von Klitzing, and K. Ploog

Phys. Rev. Lett. 67, 1642 (1991) - Published 16 September, 1991

Magnetic phase transition of ultrathin Fe films on Ag(111)

Z. Q. Qiu, J. Pearson, and S. D. Bader

Phys. Rev. Lett. 67, 1646 (1991) - Published 16 September, 1991

Scanning tunneling spectroscopy of a vortex core from the clean to the dirty limit

Ch. Renner, A. D. Kent, Ph. Niedermann, Ø. Fischer, and F. Lévy

Phys. Rev. Lett. 67, 1650 (1991) - Published 16 September, 1991

Chemisorption-Induced Changes in the X-Ray-Absorption Fine Structure of Adsorbed Species

Paul A. Stevens, Thomas H. Upton, Joachim Stöhr, and Robert J. Madix

Phys. Rev. Lett. 67, 1653 (1991) - Published 16 September, 1991

Raman scattering by a nested Fermi surface

A. Virosztek and J. Ruvalds

Phys. Rev. Lett. 67, 1657 (1991) - Published 16 September, 1991

Cross-Disciplinary Physics

Exact results for a chemical reaction model

E. Clément, P. Leroux-Hugon, and L. M. Sander

Phys. Rev. Lett. 67, 1661 (1991) - Published 16 September, 1991

Protein folding bottlenecks: A lattice Monte Carlo simulation

E. Shakhnovich, G. Farztdinov, A. M. Gutin, and M. Karplus

Phys. Rev. Lett. 67, 1665 (1991) - Published 16 September, 1991

COMMENTS

Comment on ‘‘Shape fluctuations of polymerized or solidlike membranes’’

Farid F. Abraham

Phys. Rev. Lett. 67, 1669 (1991) - Published 16 September, 1991

Lipowsky and Girardet reply

Reinhard Lipowsky and Marc Girardet

Phys. Rev. Lett. 67, 1670 (1991) - Published 16 September, 1991

Comment on ‘‘Dipole and monopole vortices in nonlinear drift waves’’

Jonas Nycander

Phys. Rev. Lett. 67, 1671 (1991) - Published 16 September, 1991

Spatschek et al. reply

K. H. Spatschek, E. W. Laedke, Chr. Marquardt, S. Musher, and H. Wenk

Phys. Rev. Lett. 67, 1672 (1991) - Published 16 September, 1991