Dynamic Melting and Decoupling of the Vortex Lattice in Layered Superconductors

Details Dynamic Melting and Decoupling of the Vortex Lattice in Layered Superconductors Dynamic Melting and Decoupling of the Vortex Lattice in Layered Superconductors

1997-12-22

arxiv.org/abs/cond-mat/9712271v1

Phys. Rev. B 57, 13 800 (1998)

Physics

Condensed Matter

Superconductivity

11 pages latex (with revtex) plus 4 postscript figures

Scientific paper

10.1103/PhysRevB.57.13800

The dynamic phase diagram of vortex lattices driven in disorder is calculated in two and three dimensions. A modified Lindemann criterion for the fluctuations of the distance of neighboring vortices is used, which unifies previous analytic approaches to the equilibrium and non-equilibrium phase transitions. The temperature shifts of the dynamic melting and decoupling transitions are found to scale inversely proportional to large driving currents. A comparison with two-dimensional simulations shows that this phenomenological approach can provide quantitative estimate for the location of these transitions.

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