Superconducting boundary conditions for mesoscopic circular samples

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dc.contributor.authorBarba-Ortega, J.
dc.contributor.authorSardella, Edson [UNESP]
dc.contributor.authorAguiar, J. A.
dc.contributor.institutionUniv Nacl Colombia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.date.accessioned2014-05-20T13:26:18Z
dc.date.available2014-05-20T13:26:18Z
dc.date.issued2011-01-01
dc.description.abstractIn the present paper we solve the time dependent Ginzburg-Landau (TDGL) equations by using the link variables technique for two shapes of circular geometry, a circular sector and a disc. The implemented algorithm is applied to a circular geometry surrounded by different kinds of material and immersed in an external magnetic field applied perpendicular to its plane. The properties of these materials are accounted for in the de Gennes boundary conditions with the de Gennes extrapolation length (the so called b parameter). We evaluate the magnetization, the superconducting electron density, the superconducting-normal magnetic field transition, and the applied magnetic field/b-parameter phase diagram. For the circular sector, our results point out that, under an appropriate choice of the b parameter, the third critical field H(c3) can be greatly increased. For the disc, we determine the b-limit for the occurrence of the Meissner, single and multi-vortex states in a type-II superconductor. In addition, we show that under an appropriate construction of the boundary, a type-II superconducting disc may behave like a type-I.en
dc.description.affiliationUniv Nacl Colombia, Dept Fis, Bogota, Colombia
dc.description.affiliationUniv Estadual Paulista, UNESP, Fac Ciencias, Dept Fis, BR-17033360 Bauru, SP, Brazil
dc.description.affiliationUniversidade Federal de Pernambuco (UFPE), Dept Fis, Lab Supercondutividade & Mat Avancados, Recife, PE, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Fac Ciencias, Dept Fis, BR-17033360 Bauru, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE)
dc.format.extent7
dc.identifierhttp://dx.doi.org/10.1088/0953-2048/24/1/015001
dc.identifier.citationSuperconductor Science & Technology. Bristol: Iop Publishing Ltd, v. 24, n. 1, p. 7, 2011.
dc.identifier.doi10.1088/0953-2048/24/1/015001
dc.identifier.issn0953-2048
dc.identifier.lattes7799253646119889
dc.identifier.orcid0000-0001-7041-8136
dc.identifier.urihttp://hdl.handle.net/11449/8457
dc.identifier.wosWOS:000285344400002
dc.language.isoeng
dc.publisherIop Publishing Ltd
dc.relation.ispartofSuperconductor Science & Technology
dc.relation.ispartofjcr2.861
dc.relation.ispartofsjr1,036
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleSuperconducting boundary conditions for mesoscopic circular samplesen
dc.typeArtigo
dcterms.licensehttp://iopscience.iop.org/info/page/openaccess
dcterms.rightsHolderIop Publishing Ltd
unesp.author.lattes7799253646119889[2]
unesp.author.orcid0000-0003-3415-1811[1]
unesp.author.orcid0000-0001-7041-8136[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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