Volume 65, Issue 4

P. M. Walker, G. Sletten, N. L. Gjrup, M. A. Bentley, J. Borggreen, B. Fabricius, A. Holm, D. Howe, J. Pedersen, J. W. Roberts, and J. F. Sharpey-Schafer

Phys. Rev. Lett. 65, 416 (1990) - Published 23 July, 1990

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Demonstration of x-ray amplifiers near the carbon K edge

B. J. MacGowan, S. Maxon, L. B. Da Silva, D. J. Fields, C. J. Keane, D. L. Matthews, A. L. Osterheld, J. H. Scofield, G. Shimkaveg, and G. F. Stone

Phys. Rev. Lett. 65, 420 (1990) - Published 23 July, 1990

Plasma and Beam Physics

Peaked density profiles in circular-limiter H modes on the TFTR tokamak

C. E. Bush et al.

Phys. Rev. Lett. 65, 424 (1990) - Published 23 July, 1990

Investigation of ion-acoustic-decay-instability thresholds in laser-plasma interactions

K. Mizuno, P. E. Young, W. Seka, R. Bahr, J. S. De Groot, R. P. Drake, and K. G. Estabrook

Phys. Rev. Lett. 65, 428 (1990) - Published 23 July, 1990

Three-dimensional Rayleigh-Taylor instability of spherical systems

H. Sakagami and K. Nishihara

Phys. Rev. Lett. 65, 432 (1990) - Published 23 July, 1990

Condensed Matter: Structure, Etc.

High-chirality blue-phase lattices are unstable: A theory for the formation of blue phase III

P. H. Keyes

Phys. Rev. Lett. 65, 436 (1990) - Published 23 July, 1990

Steady-state properties of a finite system driven by a chemical-potential gradient

Jørgen Vitting Andersen and Ole G. Mouritsen

Phys. Rev. Lett. 65, 440 (1990) - Published 23 July, 1990

Triggered energy releases in solid hydrogen hosts containing unpaired atoms

G. W. Collins, E. M. Fearon, J. L. Maienschein, E. R. Mapoles, R. T. Tsugawa, P. C. Souers, and J. R. Gaines

Phys. Rev. Lett. 65, 444 (1990) - Published 23 July, 1990

Origin of atomic resolution on metal surfaces in scanning tunneling microscopy

C. Julian Chen

Phys. Rev. Lett. 65, 448 (1990) - Published 23 July, 1990

Reconstructions of GaAs(1¯ 1¯ 1¯) surfaces observed by scanning tunneling microscopy

D. K. Biegelsen, R. D. Bringans, J. E. Northrup, and L.-E. Swartz

Phys. Rev. Lett. 65, 452 (1990) - Published 23 July, 1990

Optical interactions in the junction of a scanning tunneling microscope

Y. Kuk, R. S. Becker, P. J. Silverman, and G. P. Kochanski

Phys. Rev. Lett. 65, 456 (1990) - Published 23 July, 1990

Broken symmetry and domain structure in Ising-like systems

C. M. Newman and D. L. Stein

Phys. Rev. Lett. 65, 460 (1990) - Published 23 July, 1990

Condensed Matter: Electronic Properties, Etc.

Identification of defects in amorphous silicon

David Redfield and Richard H. Bube

Phys. Rev. Lett. 65, 464 (1990) - Published 23 July, 1990

Two-dimensional band structure of a Li layer: Li/Be(0001)

G. M. Watson, P. A. Bruhwiler, E. W. Plummer, H.-J. Sagner, and K.-H. Frank

Phys. Rev. Lett. 65, 468 (1990) - Published 23 July, 1990

Observation of the transition from adiabatic to nonadiabatic small polaron hopping in a molecularly doped polymer

L. B. Schein, D. Glatz, and J. C. Scott

Phys. Rev. Lett. 65, 472 (1990) - Published 23 July, 1990

Static electric polarizabilities as evidence for cluster geometries

I. Moullet, José Luís Martins, F. Reuse, and Jean Buttet

Phys. Rev. Lett. 65, 476 (1990) - Published 23 July, 1990

Adsorbate-substrate resonant interactions observed for CO on Cu(100) in the far infrared

C. J. Hirschmugl, G. P. Williams, F. M. Hoffmann, and Y. J. Chabal

Phys. Rev. Lett. 65, 480 (1990) - Published 23 July, 1990

Infrared reflectance measurements of the insulator-metal transition in solid hydrogen

H. K. Mao, R. J. Hemley, and M. Hanfland

Phys. Rev. Lett. 65, 484 (1990) - Published 23 July, 1990

Spin relaxation in small free iron clusters

Walt A. de Heer, Paolo Milani, and A. Chtelain

Phys. Rev. Lett. 65, 488 (1990) - Published 23 July, 1990

Magnetic x-ray dichroism in core-level photoemission from ferromagnets

L. Baumgarten, C. M. Schneider, H. Petersen, F. Schäfers, and J. Kirschner

Phys. Rev. Lett. 65, 492 (1990) - Published 23 July, 1990

Spectral densities of the symmetric Anderson model

R. N. Silver, J. E. Gubernatis, D. S. Sivia, and M. Jarrell

Phys. Rev. Lett. 65, 496 (1990) - Published 23 July, 1990

Explanation of normal-state properties of high-temperature superconductors

S. A. Trugman

Phys. Rev. Lett. 65, 500 (1990) - Published 23 July, 1990

Cross-Disciplinary Physics

Mechanism of HF etching of silicon surfaces: A theoretical understanding of hydrogen passivation

G. W. Trucks, Krishnan Raghavachari, G. S. Higashi, and Y. J. Chabal

Phys. Rev. Lett. 65, 504 (1990) - Published 23 July, 1990

Geometrical and topological aspects of electric double layers near curved surfaces

Bertrand Duplantier, Raymond E. Goldstein, Victor Romero-Rochn, and Adriana I. Pesci

Phys. Rev. Lett. 65, 508 (1990) - Published 23 July, 1990

Multiple light scattering from concentrated, interacting suspensions

Seth Fraden and Georg Maret

Phys. Rev. Lett. 65, 512 (1990) - Published 23 July, 1990

Hydrodynamic interactions in concentrated suspensions

X. Qiu, X. L. Wu, J. Z. Xue, D. J. Pine, D. A. Weitz, and P. M. Chaikin

Phys. Rev. Lett. 65, 516 (1990) - Published 23 July, 1990

Neural networks and the solution of nonlinear equations

Ido Kanter and Eli Eisenstein

Phys. Rev. Lett. 65, 520 (1990) - Published 23 July, 1990

COMMENTS

Comment on ‘‘Schottky-barrier formation at low metal coverages: A consistent molecular-orbital calculation for K on GaAs(110)’’

A. B. McLean, D. Heskett, Daixing Tang, and N. J. DiNardo

Phys. Rev. Lett. 65, 524 (1990) - Published 23 July, 1990

Ortega and Flores reply

J. Ortega and F. Flores

Phys. Rev. Lett. 65, 525 (1990) - Published 23 July, 1990

Comment on ‘‘Role of disorder in the conduction mechanism of polyanilines’’

Jean-Luc Brédas, Arthur J. Epstein, and Alan G. MacDiarmid

Phys. Rev. Lett. 65, 526 (1990) - Published 23 July, 1990

Galvão et al. reply

D. S. Galvo, D. A. dos Santos, B. Laks, C. P. de Melo, and M. J. Caldas

Phys. Rev. Lett. 65, 527 (1990) - Published 23 July, 1990