Viscoelastic Depinning of Driven Systems: Mean-Field Plastic Scallops

Details Viscoelastic Depinning of Driven Systems: Mean-Field Plastic Scallops Viscoelastic Depinning of Driven Systems: Mean-Field Plastic Scallops

1999-12-27

arxiv.org/abs/cond-mat/9912461v2

Physical Review Letters, Vol. 85, pp. 1104-1107 (2000)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.85.1104

We have investigated the mean field dynamics of an overdamped viscoelastic medium driven through quenched disorder. The model introduced incorporates coexistence of pinned and sliding degrees of freedom and can exhibit continuous elastic depinning or first order hysteretic depinning. Numerical simulations indicate mean field instabilities that correspond to macroscopic stick-slip events and lead to premature switching. The model is relevant for the dynamics of driven vortex arrays in superconductors and other extended disordered systems.

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