Models of plastic depinning of driven disordered systems

Details Models of plastic depinning of driven disordered systems Models of plastic depinning of driven disordered systems

2005-03-28

arxiv.org/abs/cond-mat/0503639v1

Pramana 64, 1097 (2005)

Physics

Condensed Matter

Soft Condensed Matter

3 figures, invited talk at StatPhys 22

Scientific paper

10.1007/BF02704171

Two classes of models of driven disordered systems that exhibit history-dependent dynamics are discussed. The first class incorporates local inertia in the dynamics via nonmonotonic stress transfer between adjacent degrees of freedom. The second class allows for proliferation of topological defects due to the interplay of strong disorder and drive. In mean field theory both models exhibit a tricritical point as a function of disorder strength. At weak disorder depinning is continuous and the sliding state is unique. At strong disorder depinning is discontinuous and hysteretic.

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