Self-consistent theory of dynamic melting of a vortex lattice

Details Self-consistent theory of dynamic melting of a vortex lattice Self-consistent theory of dynamic melting of a vortex lattice

1998-11-11

arxiv.org/abs/cond-mat/9811154v2

Physics

Condensed Matter

Superconductivity

9 pages, 1 figure, revtex, revised version

Scientific paper

The dynamic melting of vortex lattices in type II superconductors is considered. A field-theoretic formulation of the pinning problem allows the average over the quenched disorder to be performed exactly. A self-consistent theory is constructed using a functional method for the effective action, allowing a determination of the pinning force and the vortex fluctuations. The phase diagram for the dynamic melting transition is determined numerically. In contrast to perturbation theory, the self-consistent theory is in quantitative agreement with the prediction of a recent phenomenological theory and simulations and experimental data.

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