Fluid and plastic flow dynamics of the critical state for a strongly pinned 2D superconductor
Laboratoire de Physique des Solides, CNRS,
Université Paris-Sud, 91405 Orsay Cedex, France
Published online: 15 September 2000
We present simulations of the dynamic critical state for a 2D superconductor with strong pinning centers, corresponding to a matching field twice the applied magnetic field. The sharp crossover between the plastic regime, at low current density and temperature, and the fluid flow regime for flux motion is characterized by the activation energy for flux motion and the transverse diffusion of the vortices trajectory.
PACS: 64.60.Ht – Dynamic critical phenomena / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000