Transition to plastic motion as a critical phenomenon and anomalous interface layer of a 2D driven vortex lattice

  • L. Fruchter

Abstract:

The dynamic transition between ordered flow and plastic flow is studied for a two-dimensional driven vortex lattice, in the presence of sharp and dense pinning centers, from numerical simulations. For this system, which does not show smectic ordering, the lattice exhibits a first order transition from a crystal to a liquid, shortly followed by the dynamical transition to plastic flow. The resistivity provides a critical order parameter for the latter, and critical exponents are determined in analogy with a percolation transition. At the boundary between a pinned region and an unpinned one, an anomalous layer is observed, where the vortices are more strongly pinned than in the bulk.

PACS. 64.60.Ht Dynamic critical phenomena – 74.60.Ge Flux pinning, flux creep and flux-line lattice dynamics 

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Copyright information

© EDP Sciences, Springer-Verlag 2002

Authors and Affiliations

  • L. Fruchter
    • 1
  1. 1.Laboratoire de Physique des Solides, CNRS Université Paris-Sud, 91405 Orsay Cedex, FranceFR

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