Volume 69, Issue 4

J. B. McClelland, T. N. Taddeucci, X. Y. Chen, W. P. Alford, R. C. Byrd, T. A. Carey, S. DeLucia, C. D. Goodman, E. Gülmez, W. Huang, B. Luther, D. G. Marchlenski, D. J. Mercer, D. L. Prout, J. Rapaport, L. J. Rybaryck, W. Sailor, E. Sugarbaker, Y. Wang, and C. Whitten, Jr.

Phys. Rev. Lett. 69, 582 (1992) - Published 27 July, 1992

Atomic, Molecular, and Optical Physics

Ericson fluctuations in the chaotic ionization of the hydrogen atom in crossed magnetic and electric fields

Jörg Main and Günter Wunner

Phys. Rev. Lett. 69, 586 (1992) - Published 27 July, 1992

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Manifestation of Berry’s phase in image-bearing optical beams

Mordechai Segev, Richard Solomon, and Amnon Yariv

Phys. Rev. Lett. 69, 590 (1992) - Published 27 July, 1992

Spectral filtering within the Schawlow-Townes linewidth of a semiconductor laser

R. Centeno Neelen, D. M. Boersma, M. P. van Exter, G. Nienhuis, and J. P. Woerdman

Phys. Rev. Lett. 69, 593 (1992) - Published 27 July, 1992

Nonlinear theory of localized standing waves

Bruce Denardo, Andrés Larraza, Seth Putterman, and Paul Roberts

Phys. Rev. Lett. 69, 597 (1992) - Published 27 July, 1992

Saffman-Taylor plumes

Giovanni Zocchi, Patrick Tabeling, and Martine Ben Amar

Phys. Rev. Lett. 69, 601 (1992) - Published 27 July, 1992

Energy spectra in a model for convective turbulence

Axel Brandenburg

Phys. Rev. Lett. 69, 605 (1992) - Published 27 July, 1992

Nonlinear evolutions of surface gravity waves on fluid of finite depth

Y. Matsuno

Phys. Rev. Lett. 69, 609 (1992) - Published 27 July, 1992

Plasma and Beam Physics

Interaction of energetic alpha particles with intense lower hybrid waves

Nathaniel J. Fisch and Jean-Marcel Rax

Phys. Rev. Lett. 69, 612 (1992) - Published 27 July, 1992

Fluctuation and edge-current sustainment in a reversed-field pinch

H. Ji, H. Toyama, A. Fujisawa, S. Shinohara, and K. Miyamoto

Phys. Rev. Lett. 69, 616 (1992) - Published 27 July, 1992

Condensed Matter: Structure, Etc.

Theoretical prediction and direct observation of the 9R structure in Ag

F. Ernst, M. W. Finnis, D. Hofmann, T. Muschik, U. Schönberger, U. Wolf, and M. Methfessel

Phys. Rev. Lett. 69, 620 (1992) - Published 27 July, 1992

Spinodal decomposition in thin films of a polymer blend

F. Bruder and R. Brenn

Phys. Rev. Lett. 69, 624 (1992) - Published 27 July, 1992

Influence of nuclear track potentials in insulators on the emission of target Auger electrons

G. Schiwietz, P. Grande, B. Skogvall, J. P. Biersack, R. Köhrbrück, K. Sommer, A. Schmoldt, P. Goppelt, I. Kádár, S. Ricz, and U. Stettner

Phys. Rev. Lett. 69, 628 (1992) - Published 27 July, 1992

Critical dynamics in the presence of a silica gel

B. J. Frisken and David S. Cannell

Phys. Rev. Lett. 69, 632 (1992) - Published 27 July, 1992

Time-resolved spectroscopy and scaling behavior in LiCl/ $H_{2}$ O near the liquid-glass transition

I. C. Halalay and Keith A. Nelson

Phys. Rev. Lett. 69, 636 (1992) - Published 27 July, 1992

Three-dimensional model for particle-size segregation by shaking

Rémi Jullien, Paul Meakin, and André Pavlovitch

Phys. Rev. Lett. 69, 640 (1992) - Published 27 July, 1992

Hard-sphere Bose gas in random external potentials

Kerson Huang and Hsin-Fei Meng

Phys. Rev. Lett. 69, 644 (1992) - Published 27 July, 1992

Do we know the true structure of Ge(111)c(2×8)?

Noboru Takeuchi, A. Selloni, and E. Tosatti

Phys. Rev. Lett. 69, 648 (1992) - Published 27 July, 1992

Melting mechanism in monolayers of flexible rod-shaped molecules

Flemming Y. Hansen and H. Taub

Phys. Rev. Lett. 69, 652 (1992) - Published 27 July, 1992

Critical exponents for the irreversible surface reaction A+B→AB with B desorption on homogeneous and fractal media

Ezequiel V. Albano

Phys. Rev. Lett. 69, 656 (1992) - Published 27 July, 1992

Condensed Matter: Electronic Properties, Etc.

Logarithmic temperature dependence of resistivity in heavily doped conducting polymers at low temperature

T. Ishiguro, H. Kaneko, Y. Nogami, H. Ishimoto, H. Nishiyama, J. Tsukamoto, A. Takahashi, M. Yamaura, T. Hagiwara, and K. Sato

Phys. Rev. Lett. 69, 660 (1992) - Published 27 July, 1992

Evidence for trigonal symmetry of the metastable state of the EL2 defect in GaAs

P. Trautman and J. M. Baranowski

Phys. Rev. Lett. 69, 664 (1992) - Published 27 July, 1992

Nonlinear optical spectroscopy on one-dimensional excitons in silicon polymer, polysilane

T. Hasegawa, Y. Iwasa, H. Sunamura, T. Koda, Y. Tokura, H. Tachibana, M. Matsumoto, and S. Abe

Phys. Rev. Lett. 69, 668 (1992) - Published 27 July, 1992

Quantum dot arrays: A new picture of the quantum Hall effect in two-dimensional crystals

Brad L. Johnson and George Kirczenow

Phys. Rev. Lett. 69, 672 (1992) - Published 27 July, 1992

Ginzburg-Landau theory of the phase diagram of superconducting ${UPt}_{3}$

Anupam Garg

Phys. Rev. Lett. 69, 676 (1992) - Published 27 July, 1992

Pressure dependence of $T_{c}$ and charge transfer in ${YBa}_{2}$ ${Cu}_{3}$ $O_{x}$ (6.35≤x≤7) single crystals

C. C. Almasan, S. H. Han, B. W. Lee, L. M. Paulius, M. B. Maple, B. W. Veal, J. W. Downey, A. P. Paulikas, Z. Fisk, and J. E. Schirber

Phys. Rev. Lett. 69, 680 (1992) - Published 27 July, 1992

Pulsed Fourier-transform NQR of ${}^{14}N$ with a dc SQUID

M. D. Hürlimann, C. H. Pennington, N. Q. Fan, John Clarke, A. Pines, and E. L. Hahn

Phys. Rev. Lett. 69, 684 (1992) - Published 27 July, 1992

Cross-Disciplinary Physics

Structural changes and orientaional order in a sheared colloidal suspension

L. B. Chen, C. F. Zukoski, B. J. Ackerson, H. J. M. Hanley, G. C. Straty, J. Barker, and C. J. Glinka

Phys. Rev. Lett. 69, 688 (1992) - Published 27 July, 1992

COMMENTS

Comment on ‘‘Absolute cross sections for the photoionization of the 6s6p ${}^{1}$ P excited state of barium’’

B. Willke and M. Kock

Phys. Rev. Lett. 69, 692 (1992) - Published 27 July, 1992

He et al. reply

L.-W. He, C. E. Burkhardt, M. Ciocca, J. J. Leventhal, and S. T. Manson

Phys. Rev. Lett. 69, 693 (1992) - Published 27 July, 1992

ERRATA

Near Edge X-Ray-Absorption Fine-Structure Determination of Alkyl-Chain Orientation: Breakdown of the "Building-Block" Scheme

G. Hähner, M. Kinzler, Ch. Wöll, M. Grunze, M. K. Scheller, and L. S. Cederbaum

Phys. Rev. Lett. 69, 694 (1992) - Published 27 July, 1992

Erratum: ‘‘Demixing phase transition in a mixture of hard-sphere dipoles and neutral hard spheres’’ [Phys. Rev. Lett. 67, 2674 (1991)]

X. S. Chen, M. Kasch, and F. Forstmann

Phys. Rev. Lett. 69, 694 (1992) - Published 27 July, 1992