Influence of the temperature on the depinning transition of driven interfaces
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.
Keywords
Cite
@article{arxiv.cond-mat/9805156,
title = {Influence of the temperature on the depinning transition of driven interfaces},
author = {U. Nowak and K. D. Usadel},
journal= {arXiv preprint arXiv:cond-mat/9805156},
year = {2009}
}
Comments
5 pages, Latex, Figures included, to appear in Europhys. Lett