Dynamics of metastable vortex states in weakly pinned superconductors: A phenomenological model

Details Dynamics of metastable vortex states in weakly pinned superconductors: A phenomenological model Dynamics of metastable vortex states in weakly pinned superconductors: A phenomenological model

2000-09-18

arxiv.org/abs/cond-mat/0009254v1

Physics

Condensed Matter

Superconductivity

Latex file, with 5 eps figures (submitted to PRL)

Scientific paper

10.1103/PhysRevB.63.224523

We present a phenomenological model for the vortex dynamics in the peak effect region of weakly pinned superconductors. We explain the history dependent dynamic response of the metastable vortex states subjected to a transport current and the hysteretic voltage-current characteristics observed in the vicinity of peak effect in weakly pinned superconductors. A strong variation in voltage current characteristics with the current sweep rate and the anomalous dependence of critical current density $J_c$ on the magnetic field sweep rate have also been accounted for by this model.

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