Lattice effects and current reversal in superconducting ratchets



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Dinis Vizcaíno, Luis Ignacio and González Herrera, Elvira María and Anguita, J. V. and Parrondo, J. M. R. and Vicent López, José Luis (2007) Lattice effects and current reversal in superconducting ratchets. New journal of physics, 9 . ISSN 1367-2630

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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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© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
We acknowledge funding support by Spanish Ministerio de Educación y Ciencia, grants NAN04-09087, FIS05-07392, MAT05-23924E, and MOSAICO; CAM grant S-0505/ESP/0337, and UCM-Santander. Also, computer simulations of this work were performed partly at the ‘Cluster de cálculo para Técnicas Físicas’ of UCM, funded in part by UE-FEDER program and in part by UCM and in the ‘Aula Sun Microsystems’ at UCM.

Uncontrolled Keywords:Molecular Motors; Brownian Motors; Magnetic Dots; Vortex; Arrays; Rectification; Motion
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
Sciences > Physics > Nuclear physics
ID Code:43217
Deposited On:18 Jul 2017 13:54
Last Modified:10 Dec 2018 14:58

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