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Microstructure and velocity of field-driven Ising interfaces moving under a soft stochastic dynamic | | Per Arne Rikvold
; M. Kolesik
; | | Date: |
18 Feb 2003 | | Journal: | Phys. Rev. E 67, 066113 (2003). | | Subject: | Statistical Mechanics; Materials Science | cond-mat.stat-mech cond-mat.mtrl-sci | | Affiliation: | Florida State U.) and M. Kolesik (U. of Arizona | | 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 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. | | Source: | arXiv, cond-mat/0302369 | | Other source: | [GID 304663] pmid16241310 | | Services: | Forum | Review | PDF | Favorites | |
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