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Physical Review Letters

Volume 91, Issue 6

8 August 2003
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On the Cover

Angle-time plot of a model potential for the direction of a magnetic dipole (a nanoparticle in a ferrofluid) placed in an oscillating magnetic field. Full lines are long-time, deterministic solutions; dashed lines show noise-induced transitions between these. An average rotation of the particle results from different probabilities for forward- and backward-slip transitions.

From the article:

Ferrofluids as Thermal Ratchets
Andreas Engel, Hanns Walter Müller, Peter Reimann, and Achim Jung
Phys. Rev. Lett. 91, 060602 (2003)

HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

Viewing the Proton through “Color” Filters

Xiangdong Ji

Phys. Rev. Lett. 91, 062001 (2003) - Published 7 August, 2003

LETTERS

General Physics

Generating a Superposition of Spin States in an Atomic Ensemble

S. Massar and E. S. Polzik

Phys. Rev. Lett. 91, 060401 (2003) - Published 5 August, 2003

Dispersion Management for Atomic Matter Waves

B. Eiermann, P. Treutlein, Th. Anker, M. Albiez, M. Taglieber, K.-P. Marzlin, and M. K. Oberthaler

Phys. Rev. Lett. 91, 060402 (2003) - Published 8 August, 2003

Effect of Space Discretization on Phase Diagrams in Ionic Systems: A Field-Theoretic Approach

A. Ciach and G. Stell

Phys. Rev. Lett. 91, 060601 (2003) - Published 4 August, 2003

Ferrofluids as Thermal Ratchets

Andreas Engel, Hanns Walter Müller, Peter Reimann, and Achim Jung

Phys. Rev. Lett. 91, 060602 (2003) - Published 7 August, 2003

Gravitation and Astrophysics

Gravitational and Electromagnetic Fields near a de Sitter–Like Infinity

Pavel Krtouš, Jiří Podolský, and Jiří Bičák

Phys. Rev. Lett. 91, 061101 (2003) - Published 8 August, 2003

Mass, Action, and Entropy of Taub-Bolt–de Sitter Spacetimes

R. Clarkson, A. M. Ghezelbash, and R. B. Mann

Phys. Rev. Lett. 91, 061301 (2003) - Published 5 August, 2003

Accelerating Cosmologies from Compactification

Paul K. Townsend and Mattias N. R. Wohlfarth

Phys. Rev. Lett. 91, 061302 (2003) - Published 7 August, 2003

Accelerating Cosmologies from Spacelike Branes

Nobuyoshi Ohta

Phys. Rev. Lett. 91, 061303 (2003) - Published 7 August, 2003

Elementary Particles and Fields

Grand Unified Theory Precursors and Nontrivial Fixed Points in Higher-Dimensional Gauge Theories

Keith R. Dienes, Emilian Dudas, and Tony Gherghetta

Phys. Rev. Lett. 91, 061601 (2003) - Published 7 August, 2003

All-Orders Singular Emission in Gauge Theories

David A. Kosower

Phys. Rev. Lett. 91, 061602 (2003) - Published 8 August, 2003

Towards a Standard Jet Definition

D. Yu. Grigoriev, E. Jankowski, and F. V. Tkachov

Phys. Rev. Lett. 91, 061801 (2003) - Published 8 August, 2003

Study of Time-Dependent CP Asymmetry in Neutral B Decays to J/ψπ0

B. Aubert et al. (The BABAR Collaboration)

Phys. Rev. Lett. 91, 061802 (2003) - Published 8 August, 2003

FEATURED IN PHYSICS

Viewing the Proton through “Color” Filters

Xiangdong Ji

Phys. Rev. Lett. 91, 062001 (2003) - Published 7 August, 2003

Nuclear Physics

Role of the Dirac Sea in the Quenching of Gamow-Teller Strength

Haruki Kurasawa, Toshio Suzuki, and Nguyen Van Giai

Phys. Rev. Lett. 91, 062501 (2003) - Published 7 August, 2003

Atomic, Molecular, and Optical Physics

H+H2 Thermal Reaction: A Convergence of Theory and Experiment

Steven L. Mielke, Kirk A. Peterson, David W. Schwenke, Bruce C. Garrett, Donald G. Truhlar, Joe V. Michael, Meng-Chih Su, and James W. Sutherland

Phys. Rev. Lett. 91, 063201 (2003) - Published 7 August, 2003

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Measurement of the Subcycle Timing of Attosecond XUV Bursts in High-Harmonic Generation

L. C. Dinu, H. G. Muller, S. Kazamias, G. Mullot, F. Augé, Ph. Balcou, P. M. Paul, M. Kovačev, P. Breger, and P. Agostini

Phys. Rev. Lett. 91, 063901 (2003) - Published 4 August, 2003

Observation of Three-Photon Enhanced Four-Photon Absorption

Fumiyo Yoshino, Sergey Polyakov, Mingguo Liu, and George Stegeman

Phys. Rev. Lett. 91, 063902 (2003) - Published 7 August, 2003

Dynamic Nonlinear Effect on Lasing in a Random Medium

B. Liu, A. Yamilov, Y. Ling, J. Y. Xu, and H. Cao

Phys. Rev. Lett. 91, 063903 (2003) - Published 7 August, 2003

Arresting Wave Collapse by Wave Self-Rectification

Lucian-Cornel Crasovan, Juan P. Torres, Dumitru Mihalache, and Lluis Torner

Phys. Rev. Lett. 91, 063904 (2003) - Published 8 August, 2003

Classical Decays in Decoherent Quantum Maps

Ignacio García-Mata, Marcos Saraceno, and María Elena Spina

Phys. Rev. Lett. 91, 064101 (2003) - Published 5 August, 2003

Ordering Chaos by Random Shortcuts

Feng Qi, Zhonghuai Hou, and Houwen Xin

Phys. Rev. Lett. 91, 064102 (2003) - Published 7 August, 2003

Asymmetric Coupling Effects in the Synchronization of Spatially Extended Chaotic Systems

J. Bragard, S. Boccaletti, and H. Mancini

Phys. Rev. Lett. 91, 064103 (2003) - Published 8 August, 2003

Internal Granular Dynamics, Shear-Induced Crystallization, and Compaction Steps

J.-C. Tsai, G. A. Voth, and J. P. Gollub

Phys. Rev. Lett. 91, 064301 (2003) - Published 6 August, 2003

Structure and Kinematics in Dense Free-Surface Granular Flow

K. M. Hill, G. Gioia, and V. V. Tota

Phys. Rev. Lett. 91, 064302 (2003) - Published 8 August, 2003

Large Scale Structures in Rayleigh-Bénard Convection at High Rayleigh Numbers

T. Hartlep, A. Tilgner, and F. H. Busse

Phys. Rev. Lett. 91, 064501 (2003) - Published 4 August, 2003

Observation of Sommerfeld Precursors on a Fluid Surface

Éric Falcon, Claude Laroche, and Stéphan Fauve

Phys. Rev. Lett. 91, 064502 (2003) - Published 7 August, 2003

Plasma and Beam Physics

Experimental Investigation of Dynamical Coupling between Turbulent Transport and Parallel Flows in the JET Plasma-Boundary Region

C. Hidalgo, B. Gonçalves, C. Silva, M. A. Pedrosa, K. Erents, M. Hron, and G. F. Matthews

Phys. Rev. Lett. 91, 065001 (2003) - Published 4 August, 2003

Condensed Matter: Structure, etc.

High-Pressure Molecular Phases of Solid Carbon Dioxide

S. A. Bonev, F. Gygi, T. Ogitsu, and G. Galli

Phys. Rev. Lett. 91, 065501 (2003) - Published 7 August, 2003

Precise Simulation of Near-Critical Fluid Coexistence

Young C. Kim, Michael E. Fisher, and Erik Luijten

Phys. Rev. Lett. 91, 065701 (2003) - Published 6 August, 2003

Two-Dimensional Nanoscale Self-Assembly on a Gold Surface by Spinodal Decomposition

Rolf Schuster, Dominik Thron, Marcello Binetti, Xinghua Xia, and Gerhard Ertl

Phys. Rev. Lett. 91, 066101 (2003) - Published 5 August, 2003

Self-Limiting Growth of Pt Nanoparticles from MeCpPtMe3 Adsorbed on TiO2(110) Studied by Scanning Tunneling Microscopy

Satoru Takakusagi, Ken-ichi Fukui, Ryugo Tero, Fumito Nariyuki, and Yasuhiro Iwasawa

Phys. Rev. Lett. 91, 066102 (2003) - Published 6 August, 2003

Condensed Matter: Electronic Properties, etc.

Unusual Spectral Behavior of Charge-Density Waves with Imperfect Nesting in a Quasi-One-Dimensional Metal

J. Schäfer, M. Sing, R. Claessen, Eli Rotenberg, X. J. Zhou, R. E. Thorne, and S. D. Kevan

Phys. Rev. Lett. 91, 066401 (2003) - Published 4 August, 2003

Soft Fermi Surfaces and Breakdown of Fermi-Liquid Behavior

W. Metzner, D. Rohe, and S. Andergassen

Phys. Rev. Lett. 91, 066402 (2003) - Published 4 August, 2003

Evidence for Jahn-Teller Distortions at the Antiferromagnetic Transition in LaTiO3

J. Hemberger, H.-A. Krug von Nidda, V. Fritsch, J. Deisenhofer, S. Lobina, T. Rudolf, P. Lunkenheimer, F. Lichtenberg, A. Loidl, D. Bruns, and B. Büchner

Phys. Rev. Lett. 91, 066403 (2003) - Published 5 August, 2003

Universally Diverging Grüneisen Parameter and the Magnetocaloric Effect Close to Quantum Critical Points

Lijun Zhu, Markus Garst, Achim Rosch, and Qimiao Si

Phys. Rev. Lett. 91, 066404 (2003) - Published 5 August, 2003

Divergence of the Grüneisen Ratio at Quantum Critical Points in Heavy Fermion Metals

R. Küchler, N. Oeschler, P. Gegenwart, T. Cichorek, K. Neumaier, O. Tegus, C. Geibel, J. A. Mydosh, F. Steglich, L. Zhu, and Q. Si

Phys. Rev. Lett. 91, 066405 (2003) - Published 5 August, 2003

Breakdown of a Mott Insulator: A Nonadiabatic Tunneling Mechanism

Takashi Oka, Ryotaro Arita, and Hideo Aoki

Phys. Rev. Lett. 91, 066406 (2003) - Published 5 August, 2003

Hybrid Model for Chaotic Front Dynamics: From Semiconductors to Water Tanks

A. Amann, K. Peters, U. Parlitz, A. Wacker, and E. Schöll

Phys. Rev. Lett. 91, 066601 (2003) - Published 4 August, 2003

Ambipolar Nernst Effect in NbSe2

Romain Bel, Kamran Behnia, and Helmuth Berger

Phys. Rev. Lett. 91, 066602 (2003) - Published 5 August, 2003

Disorder Screening in Strongly Correlated Systems

D. Tanasković, V. Dobrosavljević, E. Abrahams, and G. Kotliar

Phys. Rev. Lett. 91, 066603 (2003) - Published 5 August, 2003

High-Field Measurements of Electron Decoherence Time in Metallic Nanowires: Switching off Magnetic Impurity Spins

P. Mohanty and R. A. Webb

Phys. Rev. Lett. 91, 066604 (2003) - Published 7 August, 2003

Relaxation and the Zeno Effect in Qubit Measurements

S. A. Gurvitz, L. Fedichkin, D. Mozyrsky, and G. P. Berman

Phys. Rev. Lett. 91, 066801 (2003) - Published 5 August, 2003

Spin-Density Response Function in a 2D Electron System under a Magnetic Field

Kanako Yoshizawa, Natsuko Hirano, and Kazuo Takayanagi

Phys. Rev. Lett. 91, 066802 (2003) - Published 8 August, 2003

Enhancement of the Quantum-Liquid Phase by Increased Resistivity in Thick a−MoxSi1−x Films

S. Okuma, S. Togo, and M. Morita

Phys. Rev. Lett. 91, 067001 (2003) - Published 4 August, 2003

Novel In-Gap Spin State in Zn-Doped La1.85Sr0.15CuO4

H. Kimura, M. Kofu, Y. Matsumoto, and K. Hirota

Phys. Rev. Lett. 91, 067002 (2003) - Published 5 August, 2003

Time-Reversal Symmetry-Breaking Superconductivity in Heavy-Fermion PrOs4Sb12 Detected by Muon-Spin Relaxation

Y. Aoki, A. Tsuchiya, T. Kanayama, S. R. Saha, H. Sugawara, H. Sato, W. Higemoto, A. Koda, K. Ohishi, K. Nishiyama, and R. Kadono

Phys. Rev. Lett. 91, 067003 (2003) - Published 6 August, 2003

Inertial Mass of the Abrikosov Vortex

E. M. Chudnovsky and A. B. Kuklov

Phys. Rev. Lett. 91, 067004 (2003) - Published 8 August, 2003

Valence-Bond Spin-Liquid State in Two-Dimensional Frustrated Spin-1/2 Heisenberg Antiferromagnets

Guang-Ming Zhang, Hui Hu, and Lu Yu

Phys. Rev. Lett. 91, 067201 (2003) - Published 7 August, 2003

Tetramerization of a Frustrated Spin-1/2 Chain

Federico Becca, Frédéric Mila, and Didier Poilblanc

Phys. Rev. Lett. 91, 067202 (2003) - Published 8 August, 2003

Current-Induced Magnetization Reversal in High Magnetic Fields in Co/Cu/Co Nanopillars

B. Özyilmaz, A. D. Kent, D. Monsma, J. Z. Sun, M. J. Rooks, and R. H. Koch

Phys. Rev. Lett. 91, 067203 (2003) - Published 8 August, 2003

Enhancement of SQUID-Detected NMR Signals with Hyperpolarized Liquid Xe129 in a 1  μT Magnetic Field

J. J. Heckman, M. P. Ledbetter, and M. V. Romalis

Phys. Rev. Lett. 91, 067601 (2003) - Published 5 August, 2003

Huge Enhancement of Electromechanical Responses in Compositionally Modulated Pb(Zr1−x Tix)O3

Ningdong Huang, Zhirong Liu, Zhongqing Wu, Jian Wu, Wenhui Duan, Bing-Lin Gu, and Xiao-Wen Zhang

Phys. Rev. Lett. 91, 067602 (2003) - Published 6 August, 2003

Interdisciplinary Physics: Biological Physics, Quantum Information, etc.

Robust Creation of Entanglement between Ions in Spatially Separate Cavities

Daniel E. Browne, Martin B. Plenio, and Susana F. Huelga

Phys. Rev. Lett. 91, 067901 (2003) - Published 4 August, 2003

Interference of Quantum Channels

Daniel K. L. Oi

Phys. Rev. Lett. 91, 067902 (2003) - Published 7 August, 2003

Sequence Space Localization in the Immune System Response to Vaccination and Disease

Michael W. Deem and Ha Youn Lee

Phys. Rev. Lett. 91, 068101 (2003) - Published 7 August, 2003

Inability of Lyapunov Exponents to Predict Epileptic Seizures

Ying-Cheng Lai, Mary Ann F. Harrison, Mark G. Frei, and Ivan Osorio

Phys. Rev. Lett. 91, 068102 (2003) - Published 8 August, 2003

Equilibrium Phase Behavior of Polydisperse Hard Spheres

Moreno Fasolo and Peter Sollich

Phys. Rev. Lett. 91, 068301 (2003) - Published 8 August, 2003

COMMENTS

Is There a Ferromagnet to Ferromagnetic s-Wave Superconductor Phase Transition?

Yuan Zhou, Jun Li, and Chang-De Gong

Phys. Rev. Lett. 91, 069701 (2003) - Published 4 August, 2003

Is There Coexistence of Itinerant Ferromagnetism and s-Wave Superconductivity?

R. Shen, Z. M. Zheng, and D. Y. Xing

Phys. Rev. Lett. 91, 069702 (2003) - Published 4 August, 2003

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