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Influence of the temperature on the depinning transition of driven interfaces

U. Nowak·K. D. Usadel
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Abstract

We study the dynamics of a driven interface in a two-dimensional random-field Ising model close to the depinning transition at small but finite temperatures T using Glauber dynamics. A square lattice is considered with an interface initially in (11)-direction. The drift velocity v is analyzed for the first time using finite size scaling at T = 0 and additionally finite temperature scaling close to the depinning transition. In both cases a perfect data collapse is obtained from which we deduce beta = 1/3 for the exponent which determines the dependence of v on the driving field, nu = 1 for the exponent of the correlation length and delta = 5 for the exponent which determines the dependence of v on T.

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BibTeXRIS

U. Nowak, K. D. Usadel. 1998-10-09. Influence of the temperature on the depinning transition of driven interfaces. https://doi.org/10.1209/epl%2Fi1998-00519-4

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