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Title

Transverse ratchet effect and superconducting vortices: simulation and experiment

AuthorsDinis, L.; Pérez de Lara, D.; González, E. M.; Anguita, José Virgilio CSIC; Parrondo, J. M. R.; Vicent, J. L.
KeywordsSuperconductivity
Surfaces
Interfaces and thin films
Issue Date23-Jul-2009
PublisherInstitute of Physics Publishing
CitationNew Journal of Physics 11 (2009)
AbstractA transverse ratchet effect has been measured in magnetic/superconducting hybrid films fabricated by electron beam lithography and magnetron sputtering techniques. The samples are Nb films grown on top of an array of Ni nanotriangles. Injecting an ac current parallel to the triangle reflection symmetry axis yields an output dc voltage perpendicular to the current, due to a net motion of flux vortices in the superconductor. The effect is reproduced by numerical simulations of vortices as Langevin particles with realistic parameters. Simulations provide an intuitive picture of the ratchet mechanism, revealing the fundamental role played by the random intrinsic pinning of the superconductor.
Publisher version (URL)http://iopscience.iop.org
httpl://dx.doi.org/10.1088/1367-2630/11/7/073046
URIhttp://hdl.handle.net/10261/23732
DOI10.1088/1367-2630/11/7/073046
ISSN1367-2630
Appears in Collections:(IMN-CNM) Artículos

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