Depinning and dynamic phases in driven three-dimensional vortex lattices in anisotropic superconductors

Details Depinning and dynamic phases in driven three-dimensional vortex lattices in anisotropic superconductors Depinning and dynamic phases in driven three-dimensional vortex lattices in anisotropic superconductors

2000-02-04

arxiv.org/abs/cond-mat/0002064v1

Physica C 341-348, 1083 (2000).

Physics

Condensed Matter

Superconductivity

2 pages, 1 figure, requires epscrc2.sty

Scientific paper

We use three-dimensional molecular dynamics simulations of magnetically interacting pancake vortices to study the dynamic phases of vortex lattices in highly anisotropic materials such as BSCCO. Our model treats the magnetic interactions of the pancakes exactly, with long-range logarithmic interactions both within and between planes. The pancake vortices decouple at low drives and show two-dimensional plastic flow. The vortex lattice both recouples and reorders as the driving current is increased, eventually forming a recoupled crystalline-like state at high drives. We construct a phase diagram as a function of interlayer coupling and show the relationship between the recoupling transition and the single-layer reordering transitions.

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