Interface Motion in Disordered Ferromagnets
Statistical Mechanics
2007-05-23 v2
Abstract
We consider numerically the depinning transition in the random-field Ising model. Our analysis reveals that the three and four dimensional model displays a simple scaling behavior whereas the five dimensional scaling behavior is affected by logarithmic corrections. This suggests that d=5 is the upper critical dimension of the depinning transition in the random-field Ising model. Furthermore, we investigate the so-called creep regime (small driving fields and temperatures) where the interface velocity is given by an Arrhenius law.
Cite
@article{arxiv.cond-mat/0208484,
title = {Interface Motion in Disordered Ferromagnets},
author = {L. Roters and S. Lubeck and K. D. Usadel},
journal= {arXiv preprint arXiv:cond-mat/0208484},
year = {2007}
}
Comments
some misprints corrected