Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1140/epjb/e2017-80260-y http://hdl.handle.net/11449/170117 |
Resumo: | Using molecular dynamics simulations, we find the commensurability force peaks in a two-dimensional superconducting thin-film with a Kagomé pinning array. A transport force is applied in two mutually perpendicular directions, and the magnetic field is increased up to the first matching field. Usually the condition to have pronounced force peaks in systems with periodic pinning is associated to the rate between the applied magnetic field and the first matching field, it must be an integer or a rational fraction. Here, we show that another condition must be satisfied, the vortex ground state must be ordered. Our calculations show that the pinning size and strength may dramatically change the vortex ground state. Small pinning radius and high values of pinning strength may lead to disordered vortex configurations, which fade the critical force peaks. The critical forces show anisotropic behavior, but the same dependence on pinning strength and radius is observed for both driven force directions. Different to cases where the applied magnetic field is higher than the first matching field, here the depinning process begins with vortices weakly trapped on top of a pinning site and not with interstitial vortices. Our results are in good agreement with recent experimental results. |
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Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fieldsSolid State and MaterialsUsing molecular dynamics simulations, we find the commensurability force peaks in a two-dimensional superconducting thin-film with a Kagomé pinning array. A transport force is applied in two mutually perpendicular directions, and the magnetic field is increased up to the first matching field. Usually the condition to have pronounced force peaks in systems with periodic pinning is associated to the rate between the applied magnetic field and the first matching field, it must be an integer or a rational fraction. Here, we show that another condition must be satisfied, the vortex ground state must be ordered. Our calculations show that the pinning size and strength may dramatically change the vortex ground state. Small pinning radius and high values of pinning strength may lead to disordered vortex configurations, which fade the critical force peaks. The critical forces show anisotropic behavior, but the same dependence on pinning strength and radius is observed for both driven force directions. Different to cases where the applied magnetic field is higher than the first matching field, here the depinning process begins with vortices weakly trapped on top of a pinning site and not with interstitial vortices. Our results are in good agreement with recent experimental results.POSMAT – Programa de Pós-Graduação em Ciência e Tecnologia de Materiais Faculdade de Ciências UNESP – Universidade Estadual PaulistaDepartment of Chemistry University of Southampton, HighfieldDepartamento de Física Faculdade de Ciências UNESP – Universidade Estadual PaulistaPOSMAT – Programa de Pós-Graduação em Ciência e Tecnologia de Materiais Faculdade de Ciências UNESP – Universidade Estadual PaulistaDepartamento de Física Faculdade de Ciências UNESP – Universidade Estadual PaulistaUniversidade Estadual Paulista (Unesp)University of SouthamptonVizarim, Nicolas P. [UNESP]Carlone, Maicon [UNESP]Verga, Lucas G.Venegas, Pablo A. [UNESP]2018-12-11T16:49:21Z2018-12-11T16:49:21Z2017-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1140/epjb/e2017-80260-yEuropean Physical Journal B, v. 90, n. 9, 2017.1434-60361434-6028http://hdl.handle.net/11449/17011710.1140/epjb/e2017-80260-y2-s2.0-850293813802-s2.0-85029381380.pdf8236432939136900000-0002-5819-0957Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEuropean Physical Journal B0,4300,430info:eu-repo/semantics/openAccess2023-11-13T06:12:00Zoai:repositorio.unesp.br:11449/170117Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:34:43.013302Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
title |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
spellingShingle |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields Vizarim, Nicolas P. [UNESP] Solid State and Materials |
title_short |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
title_full |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
title_fullStr |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
title_full_unstemmed |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
title_sort |
Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields |
author |
Vizarim, Nicolas P. [UNESP] |
author_facet |
Vizarim, Nicolas P. [UNESP] Carlone, Maicon [UNESP] Verga, Lucas G. Venegas, Pablo A. [UNESP] |
author_role |
author |
author2 |
Carlone, Maicon [UNESP] Verga, Lucas G. Venegas, Pablo A. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University of Southampton |
dc.contributor.author.fl_str_mv |
Vizarim, Nicolas P. [UNESP] Carlone, Maicon [UNESP] Verga, Lucas G. Venegas, Pablo A. [UNESP] |
dc.subject.por.fl_str_mv |
Solid State and Materials |
topic |
Solid State and Materials |
description |
Using molecular dynamics simulations, we find the commensurability force peaks in a two-dimensional superconducting thin-film with a Kagomé pinning array. A transport force is applied in two mutually perpendicular directions, and the magnetic field is increased up to the first matching field. Usually the condition to have pronounced force peaks in systems with periodic pinning is associated to the rate between the applied magnetic field and the first matching field, it must be an integer or a rational fraction. Here, we show that another condition must be satisfied, the vortex ground state must be ordered. Our calculations show that the pinning size and strength may dramatically change the vortex ground state. Small pinning radius and high values of pinning strength may lead to disordered vortex configurations, which fade the critical force peaks. The critical forces show anisotropic behavior, but the same dependence on pinning strength and radius is observed for both driven force directions. Different to cases where the applied magnetic field is higher than the first matching field, here the depinning process begins with vortices weakly trapped on top of a pinning site and not with interstitial vortices. Our results are in good agreement with recent experimental results. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-01 2018-12-11T16:49:21Z 2018-12-11T16:49:21Z |
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/10.1140/epjb/e2017-80260-y European Physical Journal B, v. 90, n. 9, 2017. 1434-6036 1434-6028 http://hdl.handle.net/11449/170117 10.1140/epjb/e2017-80260-y 2-s2.0-85029381380 2-s2.0-85029381380.pdf 823643293913690 0000-0002-5819-0957 |
url |
http://dx.doi.org/10.1140/epjb/e2017-80260-y http://hdl.handle.net/11449/170117 |
identifier_str_mv |
European Physical Journal B, v. 90, n. 9, 2017. 1434-6036 1434-6028 10.1140/epjb/e2017-80260-y 2-s2.0-85029381380 2-s2.0-85029381380.pdf 823643293913690 0000-0002-5819-0957 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
European Physical Journal B 0,430 0,430 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1808128829051371520 |