Dynamic Phases of Vortices in Superconductors with Periodic Pinning

Details Dynamic Phases of Vortices in Superconductors with Periodic Pinning Dynamic Phases of Vortices in Superconductors with Periodic Pinning

1997-03-03

arxiv.org/abs/cond-mat/9703021v1

Phys. Rev. Lett. 78, 2648 (1997).

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures. To appear in Physical Review Letters. Movies available at http://www-personal.engin.umich.edu/~nori

Scientific paper

10.1103/PhysRevLett.78.2648

We present results from extensive simulations of driven vortex lattices interacting with periodic arrays of pinning sites. Changing an applied driving force produces a rich variety of novel dynamical plastic flow phases which are very distinct from those observed in systems with random pinning arrays. Signatures of the transition between these different dynamical phases include sudden jumps in the current-voltage curves as well as marked changes in the vortex trajectories and the vortex lattice order. Several dynamical phase diagrams are obtained as a function of commensurability, pinning strength, and spatial order of the pinning sites.

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