Vortices in a mesoscopic superconducting circular sector

Detalhes bibliográficos
Autor(a) principal: Sardella, Edson [UNESP]
Data de Publicação: 2008
Outros Autores: Lisboa-Filho, Paulo Noronha [UNESP], Malvezzi, André Luiz [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1103/PhysRevB.77.104508
http://hdl.handle.net/11449/225088
Resumo: In the present paper we develop an algorithm to solve the time dependent Ginzburg-Landau equations, by using the link variables technique, for circular geometries. In addition, we evaluate the Helmholtz and Gibbs free energy, the magnetization, and the number of vortices. This algorithm is applied to a circular sector. We evaluate the superconduting-normal magnetic field transition, the magnetization, and the superconducting density. Our results point out that, as we reduce the superconducting area, the nucleation field increases. Nevertheless, as the angular width of the circular sector goes to small values the asymptotic behavior is independent of the sample area. We also show that the value of the first nucleation field is approximately the same independently of the form of the circular sector. Furthermore, we study the nucleation of giant and multivortex states for the different shapes of the present geometry. © 2008 The American Physical Society.
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spelling Vortices in a mesoscopic superconducting circular sectorIn the present paper we develop an algorithm to solve the time dependent Ginzburg-Landau equations, by using the link variables technique, for circular geometries. In addition, we evaluate the Helmholtz and Gibbs free energy, the magnetization, and the number of vortices. This algorithm is applied to a circular sector. We evaluate the superconduting-normal magnetic field transition, the magnetization, and the superconducting density. Our results point out that, as we reduce the superconducting area, the nucleation field increases. Nevertheless, as the angular width of the circular sector goes to small values the asymptotic behavior is independent of the sample area. We also show that the value of the first nucleation field is approximately the same independently of the form of the circular sector. Furthermore, we study the nucleation of giant and multivortex states for the different shapes of the present geometry. © 2008 The American Physical Society.Departamento de Física Faculdade de Ciências Universidade Estadual Paulista-UNESP, Caixa Postal 473, 17033-360, Bauru-São PauloDepartamento de Física Faculdade de Ciências Universidade Estadual Paulista-UNESP, Caixa Postal 473, 17033-360, Bauru-São PauloUniversidade Estadual Paulista (UNESP)Sardella, Edson [UNESP]Lisboa-Filho, Paulo Noronha [UNESP]Malvezzi, André Luiz [UNESP]2022-04-28T20:39:00Z2022-04-28T20:39:00Z2008-03-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevB.77.104508Physical Review B - Condensed Matter and Materials Physics, v. 77, n. 10, 2008.1098-01211550-235Xhttp://hdl.handle.net/11449/22508810.1103/PhysRevB.77.1045082-s2.0-41449085025Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review B - Condensed Matter and Materials Physicsinfo:eu-repo/semantics/openAccess2024-04-25T17:39:21Zoai:repositorio.unesp.br:11449/225088Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:09:18.268316Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Vortices in a mesoscopic superconducting circular sector
title Vortices in a mesoscopic superconducting circular sector
spellingShingle Vortices in a mesoscopic superconducting circular sector
Sardella, Edson [UNESP]
title_short Vortices in a mesoscopic superconducting circular sector
title_full Vortices in a mesoscopic superconducting circular sector
title_fullStr Vortices in a mesoscopic superconducting circular sector
title_full_unstemmed Vortices in a mesoscopic superconducting circular sector
title_sort Vortices in a mesoscopic superconducting circular sector
author Sardella, Edson [UNESP]
author_facet Sardella, Edson [UNESP]
Lisboa-Filho, Paulo Noronha [UNESP]
Malvezzi, André Luiz [UNESP]
author_role author
author2 Lisboa-Filho, Paulo Noronha [UNESP]
Malvezzi, André Luiz [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Sardella, Edson [UNESP]
Lisboa-Filho, Paulo Noronha [UNESP]
Malvezzi, André Luiz [UNESP]
description In the present paper we develop an algorithm to solve the time dependent Ginzburg-Landau equations, by using the link variables technique, for circular geometries. In addition, we evaluate the Helmholtz and Gibbs free energy, the magnetization, and the number of vortices. This algorithm is applied to a circular sector. We evaluate the superconduting-normal magnetic field transition, the magnetization, and the superconducting density. Our results point out that, as we reduce the superconducting area, the nucleation field increases. Nevertheless, as the angular width of the circular sector goes to small values the asymptotic behavior is independent of the sample area. We also show that the value of the first nucleation field is approximately the same independently of the form of the circular sector. Furthermore, we study the nucleation of giant and multivortex states for the different shapes of the present geometry. © 2008 The American Physical Society.
publishDate 2008
dc.date.none.fl_str_mv 2008-03-06
2022-04-28T20:39:00Z
2022-04-28T20:39:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.77.104508
Physical Review B - Condensed Matter and Materials Physics, v. 77, n. 10, 2008.
1098-0121
1550-235X
http://hdl.handle.net/11449/225088
10.1103/PhysRevB.77.104508
2-s2.0-41449085025
url http://dx.doi.org/10.1103/PhysRevB.77.104508
http://hdl.handle.net/11449/225088
identifier_str_mv Physical Review B - Condensed Matter and Materials Physics, v. 77, n. 10, 2008.
1098-0121
1550-235X
10.1103/PhysRevB.77.104508
2-s2.0-41449085025
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Physical Review B - Condensed Matter and Materials Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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