Volume 75, Issue 5

I. A. Kuznetsov, A. P. Serebrov, I. V. Stepanenko, A. V. Alduschenkov, M. S. Lasakov, A. A. Kokin, Yu. A. Mostovoi, B. G. Yerozolimsky, and M. S. Dewey

Phys. Rev. Lett. 75, 794 (1995) - Published 31 July, 1995

Nuclear Physics

Dilepton Decay of Giant Resonances Built on Excited States of $^{28}$ Si

A. Buda, J. C. Bacelar, A. Bałanda, Z. Sujkowski, A. van der Woude, R. Bersch, H. Ching, I. Dioszegi, D. J. Hofman, P. Paul, S. Schadmand, and R. Varma

Phys. Rev. Lett. 75, 798 (1995) - Published 31 July, 1995

Atomic, Molecular, and Optical Physics

Laser-Stimulated Recombination Spectroscopy for the Study of Long-Range Interactions in Highly Charged Rydberg Ions

T. Schüssler, U. Schramm, T. Rüter, C. Broude, M. Grieser, D. Habs, D. Schwalm, and A. Wolf

Phys. Rev. Lett. 75, 802 (1995) - Published 31 July, 1995

Extremely Cold Positrons Accumulated Electronically in Ultrahigh Vacuum

L. H. Haarsma, K. Abdullah, and G. Gabrielse

Phys. Rev. Lett. 75, 806 (1995) - Published 31 July, 1995

Studies of Electron-Molecule Scattering at Microelectronvolt Energies Using Very-High- $n$ Rydberg Atoms

M. T. Frey, S. B. Hill, K. A. Smith, F. B. Dunning, and I. I. Fabrikant

Phys. Rev. Lett. 75, 810 (1995) - Published 31 July, 1995

Measurement of Branching Ratios for the Dissociative Recombination of Cold ${HD}^{+}$ Using Fragment Imaging

D. Zajfman, Z. Amitay, C. Broude, P. Forck, B. Seidel, M. Grieser, D. Habs, D. Schwalm, and A. Wolf

Phys. Rev. Lett. 75, 814 (1995) - Published 31 July, 1995

Ab Initio Calculations of the Quasiparticle and Absorption Spectra of Clusters: The Sodium Tetramer

Giovanni Onida, Lucia Reining, R. W. Godby, R. Del Sole, and Wanda Andreoni

Phys. Rev. Lett. 75, 818 (1995) - Published 31 July, 1995

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Experimental Studies of Chaos and Localization in Quantum Wave Functions

A. Kudrolli, V. Kidambi, and S. Sridhar

Phys. Rev. Lett. 75, 822 (1995) - Published 31 July, 1995

Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase Singularity

H. He, M. E. J. Friese, N. R. Heckenberg, and H. Rubinsztein-Dunlop

Phys. Rev. Lett. 75, 826 (1995) - Published 31 July, 1995

Lattice Boltzmann Simulation of Nonideal Fluids

Michael R. Swift, W. R. Osborn, and J. M. Yeomans

Phys. Rev. Lett. 75, 830 (1995) - Published 31 July, 1995

Defect Dynamics for Spiral Chaos in Rayleigh-Bénard Convection

M. C. Cross and Yuhai Tu

Phys. Rev. Lett. 75, 834 (1995) - Published 31 July, 1995

Plasma and Beam Physics

Charging of Dust Grains in Plasma with Energetic Electrons

Bob Walch, Mihály Horányi, and Scott Robertson

Phys. Rev. Lett. 75, 838 (1995) - Published 31 July, 1995

Ion Cyclotron Range of Frequency Heating of a Deuterium-Tritium Plasma via the Second-Harmonic Tritium Cyclotron Resonance

J. R. Wilson, C. E. Bush, D. Darrow, J. C. Hosea, E. F. Jaeger, R. Majeski, M. Murakami, C. K. Phillips, J. H. Rogers, G. Schilling, J. E. Stevens, E. Synakowski, and G. Taylor

Phys. Rev. Lett. 75, 842 (1995) - Published 31 July, 1995

Measurements of Fast Confined Alphas on TFTR

R. K. Fisher, J. M. McChesney, P. B. Parks, H. H. Duong, S. S. Medley, A. L. Roquemore, D.K. Mansfield, R. V. Budny, M. P. Petrov, and R. E. Olson

Phys. Rev. Lett. 75, 846 (1995) - Published 31 July, 1995

Condensed Matter: Structure, Etc.

Collective Dynamics in Water by High Energy Resolution Inelastic X-Ray Scattering

F. Sette, G. Ruocco, M. Krisch, U. Bergmann, C. Masciovecchio, V. Mazzacurati, G. Signorelli, and R. Verbeni

Phys. Rev. Lett. 75, 850 (1995) - Published 31 July, 1995

Generalized Gibbs-Thomson Equation and Surface Stiffness for Materials with an Orientational Order Parameter

J. B. Fournier

Phys. Rev. Lett. 75, 854 (1995) - Published 31 July, 1995

Low-Energy Floppy Modes in High-Temperature Ceramics

Priya Vashishta, Rajiv K. Kalia, and Ingvar Ebbsjö

Phys. Rev. Lett. 75, 858 (1995) - Published 31 July, 1995

Discontinuous Precipitation in the Copper-Indium System from the Viewpoint of Nuclear $^{111} In$ Probes in Grain Boundaries

H. Metzner, G. Geber, M. Uhrmacher, and L. Ziegeler

Phys. Rev. Lett. 75, 862 (1995) - Published 31 July, 1995

Type I Band Alignment in ${Si}_{1 - x} {Ge}_{x} / S i (001)$ Quantum Wells: Photoluminescence under Applied [110] and [100] Uniaxial Stress

D. C. Houghton, G. C. Aers, S.-R. Eric Yang, E. Wang, and N. L. Rowell

Phys. Rev. Lett. 75, 866 (1995) - Published 31 July, 1995

Intrinsic Localized Anharmonic Modes at Crystal Edges

D. Bonart, A. P. Mayer, and U. Schröder

Phys. Rev. Lett. 75, 870 (1995) - Published 31 July, 1995

Periodic Spinodal Decomposition in a Binary Polymeric Fluid Mixture

Hajime Tanaka and Tomoo Sigehuzi

Phys. Rev. Lett. 75, 874 (1995) - Published 31 July, 1995

Surface Structure, Lattice Dynamics, and Raman Spectroscopy of Sulphur Passivated InP(001)

J.-M Jin, M. W. C. Dharma-wardana, D. J. Lockwood, G. C. Aers, Z. H. Lu, and L. J. Lewis

Phys. Rev. Lett. 75, 878 (1995) - Published 31 July, 1995

Misfit Dislocation Structure for Close-Packed Metal-Metal Interfaces

J. C. Hamilton and S. M. Foiles

Phys. Rev. Lett. 75, 882 (1995) - Published 31 July, 1995

Experimental Determination of the Turning Point of Thermal Energy Helium Atoms above a Cu(001) Surface

J. Ellis, K. Hermann, F. Hofmann, and J. P. Toennies

Phys. Rev. Lett. 75, 886 (1995) - Published 31 July, 1995

Condensed Matter: Electronic Properties, Etc.

Bosonization of One-Dimensional Exclusons and Characterization of Luttinger Liquids

Yong-Shi Wu and Yue Yu

Phys. Rev. Lett. 75, 890 (1995) - Published 31 July, 1995

Spectral Function of the 1D Hubbard Model in the $U \to + \infty$ Limit

Karlo Penc, Frédéric Mila, and Hiroyuki Shiba

Phys. Rev. Lett. 75, 894 (1995) - Published 31 July, 1995

Theory of Copper-Oxide Metals

C. M. Varma

Phys. Rev. Lett. 75, 898 (1995) - Published 31 July, 1995

Spectral Statistics beyond Random Matrix Theory

A. V. Andreev and B. L. Altshuler

Phys. Rev. Lett. 75, 902 (1995) - Published 31 July, 1995

Magnetic-Field-Induced Metal-Insulator Transitions in Multiple-Quantum-Well Structures

Y. J. Wang, B. D. McCombe, R. Meisels, F. Kuchar, and W. Schaff

Phys. Rev. Lett. 75, 906 (1995) - Published 31 July, 1995

Global Phase Diagram for the Quantum Hall Effect: An Experimental Picture

S. V. Kravchenko, Whitney Mason, J. E. Furneaux, and V. M. Pudalov

Phys. Rev. Lett. 75, 910 (1995) - Published 31 July, 1995

Lattice Effects on the Magnetoresistance in Doped LaMn $O_{3}$

H. Y. Hwang, S-W. Cheong, P. G. Radaelli, M. Marezio, and B. Batlogg

Phys. Rev. Lett. 75, 914 (1995) - Published 31 July, 1995

Interaction Coupled Cyclotron Transitions of Two-Dimensional Electron Systems in GaAs at High Temperatures

C. M. Hu, E. Batke, K. Köhler, and P. Ganser

Phys. Rev. Lett. 75, 918 (1995) - Published 31 July, 1995

Evidence for Two-Dimensional Thermal Fluctuations of the Vortex Structure in ${Bi}_{2.15} {Sr}_{1.85} {CaCu}_{2} O_{8 + δ}$ from Muon Spin Rotation Experiments

S. L. Lee, M. Warden, H. Keller, J. W. Schneider, D. Zech, P. Zimmermann, R. Cubitt, E. M. Forgan, M. T. Wylie, P. H. Kes, T. W. Li, A. A. Menovsky, and Z. Tarnawski

Phys. Rev. Lett. 75, 922 (1995) - Published 31 July, 1995

Evidence for a Superfluid Density in $t$ - $J$ Ladders

C. A. Hayward, D. Poilblanc, R. M. Noack, D. J. Scalapino, and W. Hanke

Phys. Rev. Lett. 75, 926 (1995) - Published 31 July, 1995

Anisotropic Ferromagnetic Quantum Domains

Francisco C. Alcaraz, S. R. Salinas, and W. F. Wreszinski

Phys. Rev. Lett. 75, 930 (1995) - Published 31 July, 1995

Impurities in $S = 1 / 2$ Heisenberg Antiferromagnetic Chains: Consequences for Neutron Scattering and Knight Shift

Sebastian Eggert and Ian Affleck

Phys. Rev. Lett. 75, 934 (1995) - Published 31 July, 1995

Spin Dependence of Correlations in Two-Dimensional Square-Lattice Quantum Heisenberg Antiferromagnets

N. Elstner, A. Sokol, R. R. P. Singh, M. Greven, and R. J. Birgeneau

Phys. Rev. Lett. 75, 938 (1995) - Published 31 July, 1995

Determination of Anomalous Superexchange in MnC $l_{2}$ and Its Graphite Intercalation Compound

David G. Wiesler, Masatsugu Suzuki, Itsuko S. Suzuki, and Nicholas Rosov

Phys. Rev. Lett. 75, 942 (1995) - Published 31 July, 1995

Magnetic Structures of Uranium Compounds: Effects of Relativity and Symmetry

L. M. Sandratskii and J. Kübler

Phys. Rev. Lett. 75, 946 (1995) - Published 31 July, 1995

Domain Structures in Ultrathin Magnetic Films

I. Booth, A. B. MacIsaac, J. P. Whitehead, and K. De'Bell

Phys. Rev. Lett. 75, 950 (1995) - Published 31 July, 1995

Bubble Shape Oscillations and the Onset of Sonoluminescence

Michael P. Brenner, Detlef Lohse, and T. F. Dupont

Phys. Rev. Lett. 75, 954 (1995) - Published 31 July, 1995

Cross-Disciplinary Physics

Viscosity and Structural Relaxation in Suspensions of Hard-Sphere Colloids

P. N. Segrè, S. P. Meeker, P. N. Pusey, and W. C. K. Poon

Phys. Rev. Lett. 75, 958 (1995) - Published 31 July, 1995

Neural Networks, Lattice Instantons, and the Anti-Integrable Limit

Paul C. Bressloff

Phys. Rev. Lett. 75, 962 (1995) - Published 31 July, 1995

Proportion Regulation of Biological Cells in Globally Coupled Nonlinear Systems

Tsuyoshi Mizuguchi and Masaki Sano

Phys. Rev. Lett. 75, 966 (1995) - Published 31 July, 1995

COMMENTS

Comment on “Threshold for Dissipative Fission”

H. van der Ploeg, J. C. S. Bacelar, I. Diószegi, G. van't Hof, and A. van der Woude

Phys. Rev. Lett. 75, 970 (1995) - Published 31 July, 1995

Thoennessen and Bertsch Reply:

M. Thoennessen and G. F. Bertsch

Phys. Rev. Lett. 75, 971 (1995) - Published 31 July, 1995

Comment on “Lagrange Equilibrium Points in Celestial Mechanics and Nonspreading Wave Packets for Strongly Driven Rydberg Electrons”

David Farrelly, Ernestine Lee, and T. Uzer

Phys. Rev. Lett. 75, 972 (1995) - Published 31 July, 1995

Bialynicki-Birula, Kalinski, and Eberly Reply:

Iwo Bialynicki-Birula, Maciej Kalinski, and J. H. Eberly

Phys. Rev. Lett. 75, 973 (1995) - Published 31 July, 1995

Comment on “From Feynman's Wave Function to the Effective Theory of Vortex Dynamics”

Ji-Min Duan

Phys. Rev. Lett. 75, 974 (1995) - Published 31 July, 1995

Niu, Ao, and Thouless Reply:

Qian Niu, Ping Ao, and D. J. Thouless

Phys. Rev. Lett. 75, 975 (1995) - Published 31 July, 1995

Comment on “Equilibrium Properties of a Diblock Copolymer Lamellar Phase Confined between Flat Plates”

Navjot Singh, Frank S. Bates, and Matthew Tirrell

Phys. Rev. Lett. 75, 976 (1995) - Published 31 July, 1995

Turner Replies:

Matthew S. Turner

Phys. Rev. Lett. 75, 977 (1995) - Published 31 July, 1995

Relation of Li(N $H_{3}$ $)_{4}$ to Electrides

T. A. Kaplan, J. F. Harrison, J. L. Dye, and R. Rencsok

Phys. Rev. Lett. 75, 978 (1995) - Published 31 July, 1995

Comment on “Quasiclassical Transport at a van Hove Singularity in Cuprate Superconductors”

J.-S. Zhou and J. B. Goodenough

Phys. Rev. Lett. 75, 979 (1995) - Published 31 July, 1995

Newns et al. Reply:

D. M. Newns, C. C. Tsuei, R. P. Huebener, P. J. M. van Bentum, P. C. Pattnaik, and C. C. Chi

Phys. Rev. Lett. 75, 980 (1995) - Published 31 July, 1995

Comment on “Life at the Edge of Chaos”

Ezequiel V. Albano and Roberto A. Monetti

Phys. Rev. Lett. 75, 981 (1995) - Published 31 July, 1995

Ray and Jan Reply:

T. S. Ray and N. Jan

Phys. Rev. Lett. 75, 982 (1995) - Published 31 July, 1995

ERRATA

Time Scales for Charge Equilibration of $O^{q +}$ ( $3 \leq q \leq 8$ ) Ions during Surface-Channeling Interactions with Au(110)

L. Folkerts, S. Schippers, D. M. Zehner, and F. W. Meyer

Phys. Rev. Lett. 75, 983 (1995) - Published 31 July, 1995