Artículo
Vortex kinks in superconducting films with periodically modulated thickness
Fecha de publicación:
05/2013
Editorial:
IOP Publishing
Revista:
Journal Of Physics: Condensed Matter
ISSN:
0953-8984
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We report magnetoresistance measurements in Nb films having a periodic thickness modulation. The cylinder shaped thicker regions of the sample, which form a square lattice, act as repulsive centers for the superconducting vortices. For low driving currents along one of the axes of the square lattice, the resistivity ρ increases monotonously with increasing magnetic field B and the ρ–B characteristics are approximately piecewise linear. The linear ρ versus B segments change their slope at matching fields where the number of vortices is an integer or a half integer times the number of protruding cylinders in the sample. Numerical simulations allow us to associate the different segments of linear magnetoresistance to different vortex-flow regimes, some of which are dominated by the propagation of discommensurations (kinks).
Palabras clave:
Vortex Lattices
,
Flux Pinning
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Colecciones
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Facio, Jorge Ismael; Abate, Anabella Angela; Guimpel, Julio Juan; Cornaglia, Pablo S.; Vortex kinks in superconducting films with periodically modulated thickness; IOP Publishing; Journal Of Physics: Condensed Matter; 25; 24; 5-2013; 245701-245701
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