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Vortex dynamics in disordered type-II superconductors

J. Müllers·A. Schmid
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Abstract

A field theoretical method is developed which permits us to study the dynamics of vortices in disordered environments. In particular, we obtain a self-consistent system of equations for disorder averaged quantities. Making use of a Hartree-type approximation, we calculate the current-voltage (I-V) characteristics in the flux flow regime. In order to probe incipient melting of the vortex lattice we propose an experiment where interference steps in the I-V characteristics are observed, which arise when a small ac field is superimposed on the constant voltage.

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J. Müllers, A. Schmid. 1995-05-23. Vortex dynamics in disordered type-II superconductors. https://doi.org/10.1103/physrevlett.75.136

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