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Viscoelastic depinning of driven systems: mean-field plastic scallops
Marchetti1, Middleton, Prellberg
1Physics Department, Syracuse University, Syracuse, New York 13244, USA.
Abstract:
We have investigated the mean-field dynamics of an overdamped viscoelastic medium driven through quenched disorder. The model allows for the coexistence of pinned and sliding regions 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 describes the elastic and plastic dynamics of driven vortex arrays in superconductors and other extended disordered systems.
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