Influence of pinning centers of different natures on surrounding vortices

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dc.contributor.authorCarvalho dos Santos, Rodolfo [UNESP]
dc.contributor.authorDuarte, Elwis Carlos Sartorelli [UNESP]
dc.contributor.authorOkimoto, Danilo [UNESP]
dc.contributor.authorPresotto, Alice [UNESP]
dc.contributor.authorSardella, Edson [UNESP]
dc.contributor.authorMotta, Maycon
dc.contributor.authorZadorosny, Rafael [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2023-07-29T16:01:31Z
dc.date.available2023-07-29T16:01:31Z
dc.date.issued2023-01-15
dc.description.abstractStudies involving vortex dynamics and their interaction with pinning centers are an important issue to reach higher critical currents in superconducting materials. The vortex distribution around arrays of engineered defects, such as blind and through holes, may help to improve the superconducting properties. Thus, in this work, we used the time-dependent Ginzburg-Landau theory to investigate the vortex dynamics in superconductors of mesoscopic dimensions with a large central square defect with three different configurations: (i) a hole which passes through the sample (interface with the vacuum); (ii) a superconducting region with lower critical temperature Tc; and (iii) a region with a more robust superconductivity, i.e., with a higher Tc. Such systems can be envisaged as elementary building blocks of a macroscopic decorated specimen. Therefore, we evaluated the influence of different interfaces on the vortex dynamics and their effects in the field-dependent magnetization and time-dependent induced electric potential variation. The results show that the superheating field is independent from the nature of the defect. However, the currents crowd at the vertices of the through hole producing a lower degradation of the local superconductivity, which may increase the upper critical field. On the other hand, the last type of defect can be used to control the vortex dynamics in the main superconducting region around the defect with more accuracy. While the first two defects are attractive for the vortices, the third type is repulsive, being needed several penetrated vortices in the superconducting matrix to allow penetration of vortices into the higher Tc domain.en
dc.description.affiliationDepartamento de Física e Química Universidade Estadual Paulista (UNESP) Faculdade de Engenharia, Caixa Postal 31, SP
dc.description.affiliationDepartamento de Física Faculdade de Ciências Universidade Estadual Paulista (UNESP), Caixa Postal 473
dc.description.affiliationDepartamento de Física Universidade Federal de São Carlos (UFSCar), SP
dc.description.affiliationUnespDepartamento de Física e Química Universidade Estadual Paulista (UNESP) Faculdade de Engenharia, Caixa Postal 31, SP
dc.description.affiliationUnespDepartamento de Física Faculdade de Ciências Universidade Estadual Paulista (UNESP), Caixa Postal 473
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.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 2016/12390-6
dc.description.sponsorshipIdFAPESP: 2018/06575-9
dc.description.sponsorshipIdFAPESP: 2020/10058-0
dc.description.sponsorshipIdCNPq: 310428/2021-1
dc.description.sponsorshipIdCNPq: 316602/2021-3
dc.description.sponsorshipIdCAPES: Finance Code 001
dc.identifierhttp://dx.doi.org/10.1016/j.physleta.2022.128595
dc.identifier.citationPhysics Letters, Section A: General, Atomic and Solid State Physics, v. 458.
dc.identifier.doi10.1016/j.physleta.2022.128595
dc.identifier.issn0375-9601
dc.identifier.scopus2-s2.0-85144826481
dc.identifier.urihttp://hdl.handle.net/11449/249508
dc.language.isoeng
dc.relation.ispartofPhysics Letters, Section A: General, Atomic and Solid State Physics
dc.sourceScopus
dc.subjectDefects
dc.subjectSuperconductivity
dc.subjectTDGL
dc.subjectVortex dynamics
dc.titleInfluence of pinning centers of different natures on surrounding vorticesen
dc.typeArtigo
unesp.author.orcid0000-0002-2419-2049[7]
unesp.departmentFísica - FCpt
unesp.departmentFísica e Química - FEISpt

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Bauru - FC - Faculdade de Ciências
Ilha Solteira - FEIS - Faculdade de Engenharia