Volume 75, Issue 23

H. Irnich, H. Geissel, F. Nolden, K. Beckert, F. Bosch, H. Eickhoff, B. Franzke, Y. Fujita, M. Hausmann, H. C. Jung, O. Klepper, C. Kozhuharov, G. Kraus, A. Magel, G. Münzenberg, F. Nickel, T. Radon, H. Reich, B. Schlitt, W. Schwab, M. Steck, K. Sümmerer, T. Suzuki, and H. Wollnik

Phys. Rev. Lett. 75, 4182 (1995) - Published 4 December, 1995

Scaling Laws, Shell Effects, and Transient Times in Fission Probabilities

L. G. Moretto, K. X. Jing, R. Gatti, G. J. Wozniak, and R. P. Schmitt

Phys. Rev. Lett. 75, 4186 (1995) - Published 4 December, 1995

Measurement of Compound Nucleus Space-Time Extent with Two-Neutron Correlation Functions

N. Colonna, D. R. Bowman, L. Celano, G. D'Erasmo, E. M. Fiore, L. Fiore, A. Pantaleo, V. Paticchio, G. Tagliente, and S. Pratt

Phys. Rev. Lett. 75, 4190 (1995) - Published 4 December, 1995

Atomic, Molecular, and Optical Physics

Three-Dimensional Laser Cooling of Helium Beyond the Single-Photon Recoil Limit

J. Lawall, S. Kulin, B. Saubamea, N. Bigelow, M. Leduc, and C. Cohen-Tannoudji

Phys. Rev. Lett. 75, 4194 (1995) - Published 4 December, 1995

Long-Range Order in Laser-Cooled, Atomic-Ion Wigner Crystals Observed by Bragg Scattering

Joseph N. Tan, J. J. Bollinger, B. Jelenkovic, and D. J. Wineland

Phys. Rev. Lett. 75, 4198 (1995) - Published 4 December, 1995

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Nature of Quantum Localization in Atomic Momentum Transfer Experiments

Miroslaw Latka and Bruce J. West

Phys. Rev. Lett. 75, 4202 (1995) - Published 4 December, 1995

Robust Acoustic Time Reversal with High-Order Multiple Scattering

Arnaud Derode, Philippe Roux, and Mathias Fink

Phys. Rev. Lett. 75, 4206 (1995) - Published 4 December, 1995

Plasma and Beam Physics

Coherent Radiation Reaction in Free-Electron Sources

Isidoro Kimel and Luis R. Elias

Phys. Rev. Lett. 75, 4210 (1995) - Published 4 December, 1995

Plasma-Dust Crystals and Brownian Motion

X. H. Zheng and J. C. Earnshaw

Phys. Rev. Lett. 75, 4214 (1995) - Published 4 December, 1995

Unified Theory of Stimulated Raman Scattering and Two-Plasmon Decay in Inhomogeneous Plasmas: High Frequency Hybrid Instability

Bedros B. Afeyan and Edward A. Williams

Phys. Rev. Lett. 75, 4218 (1995) - Published 4 December, 1995

Nonlinear Self-Sustained Drift-Wave Turbulence

J. F. Drake, A. Zeiler, and D. Biskamp

Phys. Rev. Lett. 75, 4222 (1995) - Published 4 December, 1995

Condensed Matter: Structure, Etc.

Role of Hydrogen in C and Si (001) Homoepitaxy

T. Ogitsu, T. Miyazaki, M. Fujita, and M. Okazaki

Phys. Rev. Lett. 75, 4226 (1995) - Published 4 December, 1995

Orientational Ordering of Solid $C_{70}$

D. -H. Oh and Young Hee Lee

Phys. Rev. Lett. 75, 4230 (1995) - Published 4 December, 1995

Forced Brillouin Spectroscopy Using Frequency-Tunable Continuous Wave Lasers

Tsuyoshi Sonehara and Hajime Tanaka

Phys. Rev. Lett. 75, 4234 (1995) - Published 4 December, 1995

Quasiparticle Excitations, Bose Condensation, and the $f$ -Sum Rule

Henry R. Glyde

Phys. Rev. Lett. 75, 4238 (1995) - Published 4 December, 1995

Near-Surface Buckling in Strained Metal Overlayer Systems

R. Q. Hwang, J. C. Hamilton, J. L. Stevens, and S. M. Foiles

Phys. Rev. Lett. 75, 4242 (1995) - Published 4 December, 1995

Coarsening of Unstable Surface Features during Fe(001) Homoepitaxy

Joseph A. Stroscio, D. T. Pierce, M. D. Stiles, A. Zangwill, and L. M. Sander

Phys. Rev. Lett. 75, 4246 (1995) - Published 4 December, 1995

Transition to Multilayer Kinetic Roughening for Metal (100) Homoepitaxy

M. C. Bartelt and J. W. Evans

Phys. Rev. Lett. 75, 4250 (1995) - Published 4 December, 1995

Observation of a Distributed Epitaxial Oxide in Thermally Grown Si $O_{2}$ on Si(001)

A. Munkholm, S. Brennan, F. Comin, and L. Ortega

Phys. Rev. Lett. 75, 4254 (1995) - Published 4 December, 1995

Direct Observation of Compositionally Homogeneous $a$ -C: H Band-Gap-Modulated Superlattices

C. A. Davis, S. R. P. Silva, R. E. Dunin-Borkowski, G. A. J. Amaratunga, K. M. Knowles, and W. M. Stobbs

Phys. Rev. Lett. 75, 4258 (1995) - Published 4 December, 1995

Condensed Matter: Electronic Properties, Etc.

Tunneling Evidence for the Quasiparticle Gap in Kondo Semiconductors CeNiSn and CeRhSb

Toshikazu Ekino, Toshiro Takabatake, Hiroaki Tanaka, and Hironobu Fujii

Phys. Rev. Lett. 75, 4262 (1995) - Published 4 December, 1995

Direct Observation of the Coulomb Correlation Gap in a Nonmetallic Semiconductor, Si: B

J. G. Massey and Mark Lee

Phys. Rev. Lett. 75, 4266 (1995) - Published 4 December, 1995

Temporal Order in Dirty Driven Periodic Media

Leon Balents and Matthew P. A. Fisher

Phys. Rev. Lett. 75, 4270 (1995) - Published 4 December, 1995

Finite-Temperature Fermi-Edge Singularity in Tunneling Studied Using Random Telegraph Signals

D. H. Cobden and B. A. Muzykantskii

Phys. Rev. Lett. 75, 4274 (1995) - Published 4 December, 1995

Coulomb Interaction and Disorder at $q = 2 k_{F}$ : A Novel Instability of the Fermi Sea and Implications for Amorphous Alloys

Johann Kroha, Andrea Huck, and Thilo Kopp

Phys. Rev. Lett. 75, 4278 (1995) - Published 4 December, 1995

Scaling of the Coulomb Energy Due to Quantum Fluctuations in the Charge on a Quantum Dot

L. W. Molenkamp, Karsten Flensberg, and M. Kemerink

Phys. Rev. Lett. 75, 4282 (1995) - Published 4 December, 1995

Giant Peaks of the Conductance in Polycrystalline Bi Nanobridges

A. Yu. Kasumov, I. I. Khodos, N. A. Kislov, O. V. Kononenko, V. N. Matveev, V. A. Tulin, Yu. B. Gorbatov, V. I. Nikolaichik, and E. E. Vdovin

Phys. Rev. Lett. 75, 4286 (1995) - Published 4 December, 1995

Evidence for Skyrmions and Single Spin Flips in the Integer Quantized Hall Effect

A. Schmeller, J. P. Eisenstein, L. N. Pfeiffer, and K. W. West

Phys. Rev. Lett. 75, 4290 (1995) - Published 4 December, 1995

Edge and Bulk of the Fractional Quantum Hall Liquids

Naoto Nagaosa and Mahito Kohmoto

Phys. Rev. Lett. 75, 4294 (1995) - Published 4 December, 1995

Exact Ground States of Generalized Hubbard Models

Jan de Boer and Andreas Schadschneider

Phys. Rev. Lett. 75, 4298 (1995) - Published 4 December, 1995

Random Quantum Spin Chains: A Real-Space Renormalization Group Study

E. Westerberg, A. Furusaki, M. Sigrist, and P. A. Lee

Phys. Rev. Lett. 75, 4302 (1995) - Published 4 December, 1995

Oscillatory Interlayer Exchange Coupling with the Cu Cap Layer Thickness in Co/Cu/Co/Cu(100)

J. J. de Vries, A. A. P. Schudelaro, R. Jungblut, P. J. H. Bloemen, A. Reinders, J. Kohlhepp, R. Coehoorn, and W. J. M. de Jonge

Phys. Rev. Lett. 75, 4306 (1995) - Published 4 December, 1995

Quantum Dynamical Echoes in the Spin Diffusion in Mesoscopic Systems

Horacio M. Pastawski, Patricia R. Levstein, and Gonzalo Usaj

Phys. Rev. Lett. 75, 4310 (1995) - Published 4 December, 1995

Cross-Disciplinary Physics

Three-Dimensional Apollonian Packing as a Model for Dense Granular Systems

S. V. Anishchik and N. N. Medvedev

Phys. Rev. Lett. 75, 4314 (1995) - Published 4 December, 1995

Differential Flow Induced Chemical Instability on a Rotating Disk

Y. Khazan and L. M. Pismen

Phys. Rev. Lett. 75, 4318 (1995) - Published 4 December, 1995

Demonstration of Marginal Stability Theory by a 200-kW Second-Harmonic Gyro-TWT Amplifier

Q. S. Wang, D. B. McDermott, and N. C. Luhmann, Jr.

Phys. Rev. Lett. 75, 4322 (1995) - Published 4 December, 1995

Long-Range Order in a Two-Dimensional Dynamical $XY$ Model: How Birds Fly Together

John Toner and Yuhai Tu

Phys. Rev. Lett. 75, 4326 (1995) - Published 4 December, 1995

COMMENTS

Comment on "Preroughening and Reentrant Layering Transitions on Triangular Lattice Substrates"

J. M. Phillips and J. Z. Larese

Phys. Rev. Lett. 75, 4330 (1995) - Published 4 December, 1995

Weichman and Goodstein Reply

P. B. Weichman and D. Goodstein

Phys. Rev. Lett. 75, 4331 (1995) - Published 4 December, 1995

Comment on "Optical Response of Arrays of Spheres from the Theory of Hypercomplex Variables"

Liang Fu and Lorenzo Resca

Phys. Rev. Lett. 75, 4332 (1995) - Published 4 December, 1995

Vagov, Radchik, and Smith Reply

Alex Vagov, Alex Radchik, and Geoff Smith

Phys. Rev. Lett. 75, 4333 (1995) - Published 4 December, 1995

ERRATA

Observation of the Capture Reaction ${}^{2}H (α, γ) {}^{6}{Li}$ and Its Role in Production of ${}^{6}{Li}$ in the Big Bang

R. G. H. Robertson, P. Dyer, R. A. Warner, R. C. Melin, T. J. Bowles, A. B. McDonald, G. C. Ball, W. G. Davies, and E. D. Earle

Phys. Rev. Lett. 75, 4334 (1995) - Published 4 December, 1995

Energy Gaps and Cohesive Energy of Ge from the Optimized Effective Potential

D. M. Bylander and Leonard Kleinman

Phys. Rev. Lett. 75, 4334 (1995) - Published 4 December, 1995

Exciton-LO-Phonon Quantum Kinetics: Evidence of Memory Effects in Bulk GaAs

L. Bányai, D. B. Tran Thoai, E. Reitsamer, H. Haug, D. Steinbach, M. U. Wehner, M. Wegener, T. Marschner, and W. Stolz

Phys. Rev. Lett. 75, 4335 (1995) - Published 4 December, 1995

Spin Correlations and Magnetic Field Effects in the Weakly Anisotropic Square-Lattice Antiferromagnetic ${Sr}_{2}$ Cu $O_{2}$ ${Cl}_{2}$

B. J. Suh, F. Borsa, L. M. Miller, M. Corti, D. C. Johnston, and D. R. Torgeson

Phys. Rev. Lett. 75, 4335 (1995) - Published 4 December, 1995

Effect of an Insoluble Surfactant on Capillary Oscillations of Bubbles in Water: Observation of a Maximum in the Damping

T. J. Asaki, D. B. Thiessen, and P. L. Marston

Phys. Rev. Lett. 75, 4336 (1995) - Published 4 December, 1995