Transport through hybrid superconducting/ferromagnetic double-path junction

dc.contributor.authorFacio, T. J.S. [UNESP]
dc.contributor.authorOrellana, P. A.
dc.contributor.authorJurelo, A. R.
dc.contributor.authorFigueira, M. S.
dc.contributor.authorCabrera, G. G.
dc.contributor.authorSiqueira, E. C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidad T�cnica Federico Santa Maria
dc.contributor.institutionUniversidade Estadual de Ponta Grossa (UEPG)
dc.contributor.institutionUniversidade Federal Fluminense (UFF)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Tecnol�gica Federal do Paran� – UTFPR
dc.date.accessioned2018-12-11T16:45:13Z
dc.date.available2018-12-11T16:45:13Z
dc.date.issued2017-02-05
dc.description.abstractIn this paper we study a double-path junction formed by a ferromagnetic and a superconductor lead. The first path connects the superconductor and ferromagnet directly while the second path connects these metals through a quantum dot. The whole system works as an Aharonov–Bohm interferometer allowing the study of the interference between these two paths under the presence of spin imbalance and Andreev bound states. We considered the effect of Fano interference on the electronic transmittance through the quantum dot and observed two regimes of conduction depending on the strength of the direct coupling. For the weak coupling regime, the transmittance presented the usual four resonances due to the Andreev bound states whereas for the strong coupling regime the profile was inverted and resonances became anti-resonances. However, even in the strong coupling regime it was possible to observe a central resonance due to the interference between the Andreev bound states. We have also studied the signatures of Fano interference on the average occupation within the quantum dot. The spin accumulation was analyzed and how it depends on the direct coupling and an external magnetic field applied to the system. The results obtained may be used in a possible experimental implementation of this system in order to probe spin related effects in ferromagnetic superconductor nanostructures.en
dc.description.affiliationDepartamento de F�sica e Qu�mica Universidade Estadual Paulista – UNESP
dc.description.affiliationDepartamento de F�sica Universidad T�cnica Federico Santa Maria, Av. Vicu�a Mackenna
dc.description.affiliationDepartamento de F�sica Universidade Estadual de Ponta Grossa – UEPG
dc.description.affiliationInstituto de F�sica Universidade Federal Fluminense
dc.description.affiliationInstituto de F�sica ‘Gleb Wataghin’ Universidade Estadual de Campinas – UNICAMP
dc.description.affiliationDepartamento de F�sica Universidade Tecnol�gica Federal do Paran� – UTFPR
dc.description.affiliationUnespDepartamento de F�sica e Qu�mica Universidade Estadual Paulista – UNESP
dc.description.sponsorshipFondo Nacional de Desarrollo Cient�fico y Tecnol�gico
dc.description.sponsorshipComisi�n Nacional de Investigaci�n Cient�fica y Tecnol�gica
dc.description.sponsorshipIdFondo Nacional de Desarrollo Cient�fico y Tecnol�gico: 1140571
dc.description.sponsorshipIdComisi�n Nacional de Investigaci�n Cient�fica y Tecnol�gica: ACT 1204
dc.format.extent529-534
dc.identifierhttp://dx.doi.org/10.1016/j.physleta.2016.11.038
dc.identifier.citationPhysics Letters, Section A: General, Atomic and Solid State Physics, v. 381, n. 5, p. 529-534, 2017.
dc.identifier.doi10.1016/j.physleta.2016.11.038
dc.identifier.file2-s2.0-85007318421.pdf
dc.identifier.issn0375-9601
dc.identifier.scopus2-s2.0-85007318421
dc.identifier.urihttp://hdl.handle.net/11449/169286
dc.language.isoeng
dc.relation.ispartofPhysics Letters, Section A: General, Atomic and Solid State Physics
dc.relation.ispartofsjr0,595
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAharonov–Bohm
dc.subjectAndreev transport
dc.subjectFerromagnetism
dc.subjectQuantum dot
dc.subjectSuperconductivity
dc.titleTransport through hybrid superconducting/ferromagnetic double-path junctionen
dc.typeArtigo

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