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Physical Review Letters

Volume 68, Issue 16

20 April 1992
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LETTERS

General Physics

Scalar Aharonov-Bohm experiment with neutrons

B. E. Allman, A. Cimmino, A. G. Klein, G. I. Opat, H. Kaiser, and S. A. Werner

Phys. Rev. Lett. 68, 2409 (1992) - Published 20 April, 1992

Asymptotics of reflectionless potentials

I. Gjaja and A. Bhattacharjee

Phys. Rev. Lett. 68, 2413 (1992) - Published 20 April, 1992

Deterministic 1/f noise in nonconserative models of self-organized criticality

Kim Christensen, Zeev Olami, and Per Bak

Phys. Rev. Lett. 68, 2417 (1992) - Published 20 April, 1992

Dispersion cancellation in a measurement of the single-photon propagation velocity in glass

A. M. Steinberg, P. G. Kwiat, and R. Y. Chiao

Phys. Rev. Lett. 68, 2421 (1992) - Published 20 April, 1992

Gravitation and Astrophysics

Deflagration instability in the quark-hadron phase transition

Bennett Link

Phys. Rev. Lett. 68, 2425 (1992) - Published 20 April, 1992

Particle detection by evaporation from superfluid helium

S. R. Bandler, R. E. Lanou, H. J. Maris, T. More, F. S. Porter, G. M. Seidel, and R. H. Torii

Phys. Rev. Lett. 68, 2429 (1992) - Published 20 April, 1992

Elementary Particles and Fields

Measurement of ρ, the ratio of the real to the imaginary part of the p¯p forward elastic-scattering amplitude, at √s =1.8 TeV

N. A. Amos, C. Avila, W. F. Baker, M. Bertani, M. M. Block, D. A. Dimitroyannis, D. P. Eartly, R. W. Ellsworth, G. Giacomelli, B. Gomez, J. A. Goodman, C. M. Guss, A. J. Lennox, M. R. Mondardini, J. P. Negret, J. Orear, S. M. Pruss, R. Rubinstein, S. Sadr, J. C. Sanabria, S. Shukla, M. Spagnoli, I. Veronesi, and S. Zucchelli

Phys. Rev. Lett. 68, 2433 (1992) - Published 20 April, 1992

Nuclear Physics

Probing parton thermalization time with charm production

Berndt Müller and Xin-Nian Wang

Phys. Rev. Lett. 68, 2437 (1992) - Published 20 April, 1992

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Picosecond light-induced noncentrosymmetry in a dye solution

Fabrice Charra, Fabrice Devaux, Jean-Michel Nunzi, and Paul Raimond

Phys. Rev. Lett. 68, 2440 (1992) - Published 20 April, 1992

Plasma and Beam Physics

Equilibrium and perturbed fluxes and turbulence levels in a tokamak: Implications for models

K. W. Gentle, B. Richards, M. E. Austin, R. V. Bravenec, D. L. Brower, R. F. Gandy, W. L. Li, P. E. Phillips, D. W. Ross, W. L. Rowan, P. M. Schoch, P. M. Valanju, and A. J. Wootton

Phys. Rev. Lett. 68, 2444 (1992) - Published 20 April, 1992

Localized lower hybrid acceleration of ionospheric plasma

P. M. Kintner, J. Vago, S. Chesney, R. L. Arnoldy, K. A. Lynch, C. J. Pollock, and T. E. Moore

Phys. Rev. Lett. 68, 2448 (1992) - Published 20 April, 1992

Condensed Matter: Structure, Etc.

Molecular weight scaling in critical polymer mixtures

Mark D. Gehlsen, Jeffrey H. Rosedale, Frank S. Bates, George D. Wignall, Lotte Hansen, and Kristoffer Almdal

Phys. Rev. Lett. 68, 2452 (1992) - Published 20 April, 1992

Femtosecond pump-probe spectroscopy of conjugated polymers: Coherent and sequential contributions

W. B. Bosma, S. Mukamel, B. I. Greene, and S. Schmitt-Rink

Phys. Rev. Lett. 68, 2456 (1992) - Published 20 April, 1992

Evolution of disorder in two-dimensional stripe patterns: ‘‘Smectic’’ instabilities and disclination unbinding

M. Seul and R. Wolfe

Phys. Rev. Lett. 68, 2460 (1992) - Published 20 April, 1992

Surface-grating-induced zone folding and hybridization of surface acoustic modes

J. R. Dutcher, S. Lee, B. Hillebrands, G. J. McLaughlin, B. G. Nickel, and G. I. Stegeman

Phys. Rev. Lett. 68, 2464 (1992) - Published 20 April, 1992

Stable phases of solid hydrogen at megabar pressures and at zero temperature

Hitose Nagara and Tuto Nakamura

Phys. Rev. Lett. 68, 2468 (1992) - Published 20 April, 1992

Numerical verification of scaling for scattering from fractons

Erich Stoll, Max Kolb, and Eric Courtens

Phys. Rev. Lett. 68, 2472 (1992) - Published 20 April, 1992

Critical dynamics of an asymmetric binary polymer mixture

D. W. Hair, E. K. Hobbie, J. Douglas, and C. C. Han

Phys. Rev. Lett. 68, 2476 (1992) - Published 20 April, 1992

Nonvanishing of the layer compressional elastic constant at the smetic-A-to-nematic phase transition: A consequence of Landau-Peierls instability?

M. Benzekri, T. Claverie, J. P. Marcerou, and J. C. Rouillon

Phys. Rev. Lett. 68, 2480 (1992) - Published 20 April, 1992

Ripplons in He4 films observed by neutron scattering

H. J. Lauter, H. Godfrin, V. L. P. Frank, and P. Leiderer

Phys. Rev. Lett. 68, 2484 (1992) - Published 20 April, 1992

Shear displacement of the K(110) surface

B. S. Itchkawitz, A. P. Baddorf, H. L. Davis, and E. W. Plummer

Phys. Rev. Lett. 68, 2488 (1992) - Published 20 April, 1992

Theory and experimental evidence of electroconvection around electrochemical deposits

V. Fleury, J.-N. Chazalviel, and M. Rosso

Phys. Rev. Lett. 68, 2492 (1992) - Published 20 April, 1992

Condensed Matter: Electronic Properties, Etc.

Structure and dynamics of bipolarons in liquid ammonia

Zhihong Deng, Glenn J. Martyna, and Michael L. Klein

Phys. Rev. Lett. 68, 2496 (1992) - Published 20 April, 1992

Far-infrared cyclotron resonance study of electron dynamics in (BEDT-TTF)2KHg(SCN)4

J. Singleton, F. L. Pratt, M. Doporto, T. J. B. M. Janssen, M. Kurmoo, J. A. A. J. Perenboom, W. Hayes, and P. Day

Phys. Rev. Lett. 68, 2500 (1992) - Published 20 April, 1992

Critical behavior of the Hall coefficient near the mobility edge

Xiao-Fang Wang, Ziqiang Wang, G. Kotliar, and C. Castellani

Phys. Rev. Lett. 68, 2504 (1992) - Published 20 April, 1992

Evidence for substitutional-interstitial defect motion leading to DX behavior by donors in AlxGa1−xAs

L. Dobaczewski, P. Kaczor, M. Missous, A. R. Peaker, and Z. Żytkiewicz

Phys. Rev. Lett. 68, 2508 (1992) - Published 20 April, 1992

Landauer formula for the current through an interacting electron region

Yigal Meir and Ned S. Wingreen

Phys. Rev. Lett. 68, 2512 (1992) - Published 20 April, 1992

Direct Coulomb and phonon-mediated coupling between spatially separated electron gases

H. C. Tso, P. Vasilopoulos, and F. M. Peeters

Phys. Rev. Lett. 68, 2516 (1992) - Published 20 April, 1992

Residual atomic behavior of (sp)-impurities in a Mg host

Stephan Geier and Gerd Bergmann

Phys. Rev. Lett. 68, 2520 (1992) - Published 20 April, 1992

Hall voltage sign reversal in thin superconducting films

Richard A. Ferrell

Phys. Rev. Lett. 68, 2524 (1992) - Published 20 April, 1992

Monte Carlo simulation of flux lines

Hong-ru Ma and S. T. Chui

Phys. Rev. Lett. 68, 2528 (1992) - Published 20 April, 1992

Evidence in the elastic properties for a stress-related phase transition in the high-Tc material: Bi2Sr2CaCu2Ox

T. M. Tritt, M. Marone, A. C. Ehrlich, M. J. Skove, D. J. Gillespie, R. L. Jacobsen, G. X. Tessema, J. P. Franck, and J. Jung

Phys. Rev. Lett. 68, 2531 (1992) - Published 20 April, 1992

Scaling of I-V characteristics of Superconducting wire networks at irrational uniform frustration

F. Yu, N. E. Israeloff, A. M. Goldman, and R. Bojko

Phys. Rev. Lett. 68, 2535 (1992) - Published 20 April, 1992

Symmetries of the large-U Hubbard model at half filling

Ling-Lie Chau, Ding-Wei Huang, and Yue Yu

Phys. Rev. Lett. 68, 2539 (1992) - Published 20 April, 1992

Out-of-plane orbital characters of intrinsic and doped holes in La2−xSrxCuO4

C. T. Chen, L. H. Tjeng, J. Kwo, H. L. Kao, P. Rudolf, F. Sette, and R. M. Fleming

Phys. Rev. Lett. 68, 2543 (1992) - Published 20 April, 1992

Observation of direct vibrational excitation in collisions of H2 and D2 with a Cu(111) surface

C. T. Rettner, D. J. Auerbach, and H. A. Michelsen

Phys. Rev. Lett. 68, 2547 (1992) - Published 20 April, 1992

Cross-Disciplinary Physics

Experimental and theoretical study of toroidal vesicles

B. Fourcade, M. Mutz, and D. Bensimon

Phys. Rev. Lett. 68, 2551 (1992) - Published 20 April, 1992

Laser diffraction determination of the crystalline structure of an electrorheological fluid

Tian-jie Chen, R. N. Zitter, and R. Tao

Phys. Rev. Lett. 68, 2555 (1992) - Published 20 April, 1992

Scaling of transient hydrodynamic interactions in concentrated suspensions

J. X. Zhu, D. J. Durian, J. Müller, D. A. Weitz, and D. J. Pine

Phys. Rev. Lett. 68, 2559 (1992) - Published 20 April, 1992

COMMENTS

Comment on ‘‘Alternative method of imaging surface topologies of nonconducting bulk specimens by scanning tunneling microscopy’’

John T. Woodward, Joseph A. Zasadzinski, and D. K. Schwartz

Phys. Rev. Lett. 68, 2563 (1992) - Published 20 April, 1992

Yuan, Shao, and Gao reply

Jian-Yang Yuan, Zhifeng Shao, and Chao Gao

Phys. Rev. Lett. 68, 2564 (1992) - Published 20 April, 1992

ERRATA

Sur et al. Reply

B. Sur, E. B. Norman, F. E. Wietfeldt, K. T. Lesko, M. M. Hindi, R. M. Larimer, P. N. Luke, W. L. Hansen, and E. E. Haller

Phys. Rev. Lett. 68, 2565 (1992) - Published 20 April, 1992

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