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Interface Motion in Disordered Ferromagnets

L. Roters·S. Lubeck·K. D. Usadel
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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.

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L. Roters, S. Lubeck, K. D. Usadel. 2002-10-14. Interface Motion in Disordered Ferromagnets. https://arxiv.org/abs/cond-mat/0208484

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