Volume 68, Issue 6

J. Duryea, G. Guglielmo, K. Heller, K. Johns, M. Shupe, K. Thorne, C. James, K. B. Luk, R. Rameika, P. M. Ho, M. J. Longo, H. T. Diehl, S. Teige, and G. B. Thomson

Phys. Rev. Lett. 68, 768 (1992) - Published 10 February, 1992

Nuclear Physics

Nuclear-matter properties based on a relativistic model of the nucleon-nucleon interaction

A. Amorim and J. A. Tjon

Phys. Rev. Lett. 68, 772 (1992) - Published 10 February, 1992

Longitudinal-transverse interference structure function of ${}^{2}H$

M. van der Schaar, H. Arenhövel, H. P. Blok, H. J. Bulten, E. Hummel, E. Jans, L. Lapikás, G. van der Steenhoven, J. A. Tjon, J. Wesseling, and P. K. A. de Witt Huberts

Phys. Rev. Lett. 68, 776 (1992) - Published 10 February, 1992

Parity violation in the compound nucleus: The role of distant states

J. D. Bowman, G. T. Garvey, C. R. Gould, A. C. Hayes, and M. B. Johnson

Phys. Rev. Lett. 68, 780 (1992) - Published 10 February, 1992

Atomic, Molecular, and Optical Physics

Giant plasmon excitation in free $C_{60}$ and $C_{70}$ molecules studied by photoionization

I. V. Hertel, H. Steger, J. de Vries, B. Weisser, C. Menzel, B. Kamke, and W. Kamke

Phys. Rev. Lett. 68, 784 (1992) - Published 10 February, 1992

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Coherent bremsstrahlung at pp or p¯p colliders

I. F. Ginzburg, G. L. Kotkin, S. I. Polityko, and V. G. Serbo

Phys. Rev. Lett. 68, 788 (1992) - Published 10 February, 1992

Synchrotron-radiation laser

J. L. Hirshfield

Phys. Rev. Lett. 68, 792 (1992) - Published 10 February, 1992

Demonstration of population inversion by resonant photopumping in a neon gas cell irradiated by a sodium Z pinch

J. L. Porter, R. B. Spielman, M. K. Matzen, E. J. McGuire, L. E. Ruggles, M. F. Vargas, J. P. Apruzese, R. W. Clark, and J. Davis

Phys. Rev. Lett. 68, 796 (1992) - Published 10 February, 1992

Condensed Matter: Structure, Etc.

3D XY behavior of a nematic-smectic-A phase transition: Confirmation of the de Gennes model

W. G. Bouwman and W. H. de Jeu

Phys. Rev. Lett. 68, 800 (1992) - Published 10 February, 1992

Direct observation of the Brownian motion of a liquid-crystal topological defect

Chris D. Muzny and Noel A. Clark

Phys. Rev. Lett. 68, 804 (1992) - Published 10 February, 1992

Local investigation of atomic transport induced in amorphous systems by swift-heavy-ion irradiation

L. Thomé, F. Garrido, J. C. Dran, A. Benyagoub, S. Klaumünzer, and A. Dunlop

Phys. Rev. Lett. 68, 808 (1992) - Published 10 February, 1992

Kinetics of a vacancy-driven order-disorder transition in a two-dimensional binary alloy

Eduard Vives and Antoni Planes

Phys. Rev. Lett. 68, 812 (1992) - Published 10 February, 1992

Sinuous step instability on the Si(001) surface

J. Tersoff and E. Pehlke

Phys. Rev. Lett. 68, 816 (1992) - Published 10 February, 1992

Wavy steps on Si(001)

R. M. Tromp and M. C. Reuter

Phys. Rev. Lett. 68, 820 (1992) - Published 10 February, 1992

Doping-induced distortions and bonding in $K_{6}$ $C_{60}$ and ${Rb}_{6}$ $C_{60}$

Wanda Andreoni, François Gygi, and Michele Parrinello

Phys. Rev. Lett. 68, 823 (1992) - Published 10 February, 1992

Sound velocity and attenuation in single-crystal $C_{60}$

X. D. Shi, A. R. Kortan, J. M. Williams, A. M. Kini, B. M. Savall, and P. M. Chaikin

Phys. Rev. Lett. 68, 827 (1992) - Published 10 February, 1992

Condensed Matter: Electronic Properties, Etc.

Direct determination of impact-ionization rates near threshold in semiconductors using soft-x-ray photoemission

E. A. Eklund, P. D. Kirchner, D. K. Shuh, F. R. McFeely, and E. Cartier

Phys. Rev. Lett. 68, 831 (1992) - Published 10 February, 1992

Correlation between x-ray absorption and chemical potential measurements in lithium intercalated carbons

J. R. Dahn, J. N. Reimers, T. Tiedje, Y. Gao, A. K. Sleigh, W. R. McKinnon, and S. Cramm

Phys. Rev. Lett. 68, 835 (1992) - Published 10 February, 1992

Symmetry-induced uniaxial anisotropy in ultrathin epitaxial cobalt films grown on Cu(1 1 13)

A. Berger, U. Linke, and H. P. Oepen

Phys. Rev. Lett. 68, 839 (1992) - Published 10 February, 1992

Flux-sensitive correlations of mutually incoherent quantum channels

M. Büttiker

Phys. Rev. Lett. 68, 843 (1992) - Published 10 February, 1992

Diffuse phase transitions and random-field-induced domain states of the ‘‘relaxor’’ ferroelectric ${PbMg}_{1 / 3}$ ${Nb}_{2 / 3}$ $O_{3}$

V. Westphal, W. Kleemann, and M. D. Glinchuk

Phys. Rev. Lett. 68, 847 (1992) - Published 10 February, 1992

Two-dimensional ferromagnetism of 3d, 4d, and 5d transition metal monolayers on noble metal (001) substrates

S. Blügel

Phys. Rev. Lett. 68, 851 (1992) - Published 10 February, 1992

Hidden order in a frustrated system: Properties of the Heisenberg Kagomé antiferromagnet

J. T. Chalker, P. C. W. Holdsworth, and E. F. Shender

Phys. Rev. Lett. 68, 855 (1992) - Published 10 February, 1992

Roughness and giant magnetoresistance in Fe/Cr superlattices

Eric E. Fullerton, David M. Kelly, J. Guimpel, Ivan K. Schuller, and Y. Bruynseraede

Phys. Rev. Lett. 68, 859 (1992) - Published 10 February, 1992

Anomalous x-ray scattering measurement of near-neighbor individual pair displacements and chemical order in ${Fe}_{22.5}$ ${Ni}_{77.5}$

G. E. Ice, C. J. Sparks, A. Habenschuss, and L. B. Shaffer

Phys. Rev. Lett. 68, 863 (1992) - Published 10 February, 1992

Quasi-2D behavior in bulk isotropic type-II superconductors: Shape effects

F. Hellman, E. M. Gyorgy, and R. C. Dynes

Phys. Rev. Lett. 68, 867 (1992) - Published 10 February, 1992

Two-particle spectral properties of generalized Landau liquids

J. M. P. Carmelo and P. Horsch

Phys. Rev. Lett. 68, 871 (1992) - Published 10 February, 1992

From isotropic to anisotropic superconductors: A scaling approach

G. Blatter, V. B. Geshkenbein, and A. I. Larkin

Phys. Rev. Lett. 68, 875 (1992) - Published 10 February, 1992

Flux-line pinning in ${Bi}_{2}$ ${Sr}_{2}$ ${Ca}_{1}$ ${Cu}_{2}$ $O_{x}$ crystals: Interplay of intrinsic 2D behavior and irradiation-induced columnar defects

W. Gerhäuser, G. Ries, H. W. Neumüller, W. Schmidt, O. Eibl, Saemann-Ischenko, and S. Klaumünzer

Phys. Rev. Lett. 68, 879 (1992) - Published 10 February, 1992

Raman scattering and electron-phonon coupling in ${Rb}_{x}$ $C_{60}$

Michael G. Mitch, Sabrina J. Chase, and Jeffrey S. Lannin

Phys. Rev. Lett. 68, 883 (1992) - Published 10 February, 1992

Dynamics of photoexcited states in $C_{60}$ : An optically detected magnetic resonance, ESR, and light-induced ESR study

P. A. Lane, L. S. Swanson, Q.-X. Ni, J. Shinar, J. P. Engel, T. J. Barton, and L. Jones

Phys. Rev. Lett. 68, 887 (1992) - Published 10 February, 1992

COMMENTS

Comment on ‘‘Confinement degradation and enhanced microturbulence as long-time precursors to high-density-limit tokamak disruptions’’

F. A. Haas and A. Thyagaraja

Phys. Rev. Lett. 68, 891 (1992) - Published 10 February, 1992

Brower et al. reply

D. L. Brower, C. X. Yu, R. V. Bravenec, H. Lin, N. C. Luhmann, Jr., W. A. Peebles, Ch. P. Ritz, B. A. Smith, A. J. Wootton, Z. M. Zhang, and S. J. Zhao

Phys. Rev. Lett. 68, 892 (1992) - Published 10 February, 1992