Exchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| hal.structure.identifier | Laboratoire de Physique des Solides [LPS] | |
| dc.contributor.author | CAYSSOL, J. | |
| hal.structure.identifier | Laboratoire de Physique des Solides [LPS] | |
| dc.contributor.author | MONTAMBAUX, G. | |
| dc.date.created | 2004 | |
| dc.date.issued | 2004 | |
| dc.identifier.issn | 1098-0121 | |
| dc.description.abstractEn | The 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.iso | en | |
| dc.publisher | American Physical Society | |
| dc.title.en | Exchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction | |
| dc.type | Article de revue | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall] | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con] | |
| dc.identifier.arxiv | cond-mat/0404190 | |
| bordeaux.journal | Physical Review B: Condensed Matter and Materials Physics (1998-2015) | |
| bordeaux.page | 224520 | |
| bordeaux.volume | 70 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00133920 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00133920v1 | |
| bordeaux.COinS | ctx_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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