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hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
hal.structure.identifierLaboratoire de Physique des Solides [LPS]
dc.contributor.authorCAYSSOL, J.
hal.structure.identifierLaboratoire de Physique des Solides [LPS]
dc.contributor.authorMONTAMBAUX, G.
dc.date.created2004
dc.date.issued2004
dc.identifier.issn1098-0121
dc.description.abstractEnThe stationnary Josephson effect in a clean Superconductor-Ferromagnet-Superconductor junction is revisited for arbitrarily large spin polarizations. The quasiclassical calculation of the supercurrent assumes that the Andreev reflection is complete for all channels. However, De Jong and Beenakker have shown that the Andreev reflection at a clean FS interface is incomplete, due to the exchange interaction in the ferromagnet. Taking into account this incomplete Andreev reflection, we investigate the quasiparticle spectrum, the Josephson current and the $0-\pi$ transition in a ballistic single channel SFS junction. We find that energy gaps open in the phase dependent spectrum. Although the spectrum is strongly modified when the exchange energy increases, the Josephson current and the $0-\pi$ transition are only weakly affected by the incomplete Andreev reflection, except when the exchange energy is close to the Fermi energy.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enExchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction
dc.typeArticle de revue
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con]
dc.identifier.arxivcond-mat/0404190
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page224520
bordeaux.volume70
bordeaux.peerReviewedoui
hal.identifierhal-00133920
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00133920v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20B:%20Condensed%20Matter%20and%20Materials%20Physics%20(1998-2015)&rft.date=2004&rft.volume=70&rft.spage=224520&rft.epage=224520&rft.eissn=1098-0121&rft.issn=1098-0121&rft.au=CAYSSOL,%20J.&MONTAMBAUX,%20G.&rft.genre=article


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