Lattice effects and current reversal in superconducting ratchets
classification
❄️ cond-mat.supr-con
cond-mat.stat-mech
keywords
latticevortexcurrentreversalmechanismsuperconductingartificialasymmetric
read the original abstract
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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