Vortices in a mesoscopic superconducting circular sector
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
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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Repositório Institucional da UNESP |
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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 |
|
_version_ |
1808128323172171776 |