Lattice effects and current reversal in superconducting ratchets

Details Lattice effects and current reversal in superconducting ratchets Lattice effects and current reversal in superconducting ratchets

2007-09-18

arxiv.org/abs/0709.2885v1

Physics

Condensed Matter

Superconductivity

12 pages, 7 figures

Scientific paper

10.1088/1367-2630/9/10/366

Competition between the vortex lattice and a lattice of asymmetric artificial defects is shown to play a crucial role in ratchet experiments in superconducting films. We present a novel and collective mechanism for current reversal based on a reconfiguration of the vortex lattice. In contrast to previous models of vortex current reversal, the mechanism is based on the global response of the vortex lattice to external forces.

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