CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS

CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS

In this article, we theoretically investigated the vortex configuration of mesoscopic samples of different geometries, imbedded in an external magnetic field. We use the Ginzburg-Landau theory to obtain the spatial distribution of the superconducting electron density in long prisms with a square and triangular cross-section. Taking into account de Gennes boundary conditions via the extrapolation length, b, we study the properties of a mesoscopic superconducting square surrounded by different materials (metallic and another superconductor at higher critical temperature) in the presence of an external magnetic field applied perpendicularly to the square surface. The b-limit for the occurrence of a single vortex in the sample of area d2 is determined. Also, we obtain the vortex configurations for a mesoscopic triangle with the magnetic field applied perpendicularly to a sample plane. In most of the configurations, the vortices present twofold or threefold symmetry.

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Main Author: BARBA ORTEGA,JOSE JOSE
Format: Digital revista
Language:English
Published: Universidad Nacional de Colombia 2011
Online Access:http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0012-73532011000400019
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spelling oai:scielo:S0012-735320110004000192011-11-02CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMSBARBA ORTEGA,JOSE JOSE Mesoscopics Ginzburg-Landau molecular dynamics de Gennes parameter In this article, we theoretically investigated the vortex configuration of mesoscopic samples of different geometries, imbedded in an external magnetic field. We use the Ginzburg-Landau theory to obtain the spatial distribution of the superconducting electron density in long prisms with a square and triangular cross-section. Taking into account de Gennes boundary conditions via the extrapolation length, b, we study the properties of a mesoscopic superconducting square surrounded by different materials (metallic and another superconductor at higher critical temperature) in the presence of an external magnetic field applied perpendicularly to the square surface. The b-limit for the occurrence of a single vortex in the sample of area d2 is determined. Also, we obtain the vortex configurations for a mesoscopic triangle with the magnetic field applied perpendicularly to a sample plane. In most of the configurations, the vortices present twofold or threefold symmetry.info:eu-repo/semantics/openAccessUniversidad Nacional de ColombiaDYNA v.78 n.168 20112011-08-01info:eu-repo/semantics/articletext/htmlhttp://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0012-73532011000400019en
institution SCIELO
collection OJS
country Colombia
countrycode CO
component Revista
access En linea
databasecode rev-scielo-co
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author BARBA ORTEGA,JOSE JOSE
spellingShingle BARBA ORTEGA,JOSE JOSE
CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS
author_facet BARBA ORTEGA,JOSE JOSE
author_sort BARBA ORTEGA,JOSE JOSE
title CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS
title_short CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS
title_full CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS
title_fullStr CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS
title_full_unstemmed CONFINEMENT EFFECTS ON MIXED STATE IN SUPERCONDUCTING PRISMS
title_sort confinement effects on mixed state in superconducting prisms
description In this article, we theoretically investigated the vortex configuration of mesoscopic samples of different geometries, imbedded in an external magnetic field. We use the Ginzburg-Landau theory to obtain the spatial distribution of the superconducting electron density in long prisms with a square and triangular cross-section. Taking into account de Gennes boundary conditions via the extrapolation length, b, we study the properties of a mesoscopic superconducting square surrounded by different materials (metallic and another superconductor at higher critical temperature) in the presence of an external magnetic field applied perpendicularly to the square surface. The b-limit for the occurrence of a single vortex in the sample of area d2 is determined. Also, we obtain the vortex configurations for a mesoscopic triangle with the magnetic field applied perpendicularly to a sample plane. In most of the configurations, the vortices present twofold or threefold symmetry.
publisher Universidad Nacional de Colombia
publishDate 2011
url http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0012-73532011000400019
work_keys_str_mv AT barbaortegajosejose confinementeffectsonmixedstateinsuperconductingprisms
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