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28 March 2024
 
  » arxiv » cond-mat/0203168

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Hysteresis in driven disordered systems: From plastic depinning to magnets
M. Cristina Marchetti ; Karin A. Dahmen ;
Date 7 Mar 2002
Journal Phys. Rev. B 66, 214201 (2002)
Subject cond-mat
AffiliationSyracuse University) and Karin A. Dahmen (UIUC
AbstractWe study the dynamics of a viscoelastic medium driven through quenched disorder by expanding about mean field theory in $6-epsilon$ 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.
Source arXiv, cond-mat/0203168
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