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Hysteresis in driven disordered systems: From plastic depinning to magnets

M. Cristina Marchetti·Karin A. Dahmen
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Abstract

We study the dynamics of a viscoelastic medium driven through quenched disorder by expanding about mean field theory in $6-ε$ dimensions. The model exhibits a critical point separating a region where the dynamics is hysteretic with a macroscopic jump between strongly pinned and weakly pinned states, from a region where the sliding state is unique and no jump occurs. The disappearance of the jump at the critical point is described by universal exponents. As suggested in \onlinecite{MMP00}, the model appears to be in the same universality class as the zero-temperature random field Ising model of hysteresis in magnets.

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M. Cristina Marchetti, Karin A. Dahmen. 2002-11-07. Hysteresis in driven disordered systems: From plastic depinning to magnets. https://doi.org/10.1103/physrevb.66.214201

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