Microstructure and velocity of field-driven Ising interfaces moving under a soft stochastic dynamic

Per Arne Rikvold and M. Kolesik
Phys. Rev. E 67, 066113 – Published 25 June 2003
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Abstract

We present theoretical and dynamic Monte Carlo simulation results for the mobility and microscopic structure of (1+1)-dimensional Ising interfaces moving far from equilibrium in an applied field under a single-spin-flip “soft” stochastic dynamic. The soft dynamic is characterized by the property that the effects of changes in field energy and interaction energy factorize in the transition rate, in contrast to the nonfactorizing nature of the traditional Glauber and Metropolis rates (“hard” dynamics). This work extends our previous studies of the Ising model with a hard dynamic and the unrestricted solid-on-solid (SOS) model with soft and hard dynamics. [P. A. Rikvold and M. Kolesik, J. Stat. Phys. 100, 377 (2000); J. Phys. A 35, L117 (2002); Phys. Rev. E 66, 066116 (2002).] The Ising model with soft dynamics is found to have closely similar properties to the SOS model with the same dynamic. In particular, the local interface width does not diverge with increasing field as it does for hard dynamics. The skewness of the interface at nonzero field is very weak and has the opposite sign of that obtained with hard dynamics.

  • Received 18 February 2003

DOI:https://doi.org/10.1103/PhysRevE.67.066113

©2003 American Physical Society

Authors & Affiliations

Per Arne Rikvold1,2,* and M. Kolesik3,4,†

  • 1Center for Materials Research and Technology, School of Computational Science and Information Technology, and Department of Physics, Florida State University, Tallahassee, Florida 32306-4350, USA
  • 2Center for Stochastic Processes in Science and Engineering, Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0435, USA
  • 3Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovak Republic
  • 4Optical Sciences Center, University of Arizona, Tucson, Arizona 85721, USA

  • *Electronic address: rikvold@csit.fsu.edu
  • Electronic address: kolesik@acms.arizona.edu

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Vol. 67, Iss. 6 — June 2003

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