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Spin polarized current and Andreev transmission in planar superconducting/ferromagnetic Nb/Ni junctions

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dc.contributor.authorGonzález Herrera, Elvira María
dc.contributor.authorFolgueras, A. D.
dc.contributor.authorEscudero, R.
dc.contributor.authorFerrer, J.M.
dc.contributor.authorGuinea, F.
dc.contributor.authorVicent López, José Luis
dc.date.accessioned2023-06-20T12:39:16Z
dc.date.available2023-06-20T12:39:16Z
dc.date.issued2007-02-21
dc.description© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. We thank very useful discussions with J Moodera, M Eschrig and M Fogelstrom. This study was supported by MEC (FIS2005-0739, NAN2004-09087, MAT2005-23924E, MAT2002-0495-C02-01, BFM2003-03156), CAM (S-0505/ESP/0337) and Santander-UCM. Additionally, RE thanks Universidad Complutense and Ministerio de Educación y Ciencia for a sabbatical professorship. AD-F thanks Ministerio de Educación y Ciencia for a FPU grant (AP2002-1383).
dc.description.abstractWe have measured the tunnelling current in Nb/Nb_xO_y/Ni planar tunnel junctions at different temperatures. The junctions are in the intermediate transparency regime. We have extracted the current polarization of the metal/ferromagnet junction without applying a magnetic field. We have used a simple theoretical model, that provides consistent fitting parameters for the whole range of temperatures analysed. We have also been able to gain insight into the microscopic structure of the oxide barriers of our junctions.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMEC
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipSantander-UCM
dc.description.sponsorshipMinisterio de Educación y Ciencia
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/43400
dc.identifier.doi10.1088/1367-2630/9/2/034
dc.identifier.issn1367-2630
dc.identifier.officialurlhttp://dx.doi.org/10.1088/1367-2630/9/2/034
dc.identifier.relatedurlhttp://iopscience.iop.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/52072
dc.journal.titleNew journal of physics
dc.language.isoeng
dc.publisherIOP Publishing
dc.relation.projectIDFIS2005-0739
dc.relation.projectIDNAN2004-09087
dc.relation.projectIDMAT2005-23924E
dc.relation.projectIDMAT2002-0495-C02-01
dc.relation.projectIDBFM2003-03156
dc.relation.projectIDS-0505/ESP/0337
dc.relation.projectIDAP2002-1383
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu538.9
dc.subject.keywordSuperlattices
dc.subject.keywordReflection
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleSpin polarized current and Andreev transmission in planar superconducting/ferromagnetic Nb/Ni junctions
dc.typejournal article
dc.volume.number9
dspace.entity.typePublication
relation.isAuthorOfPublication23ae5b44-e89a-4c78-8e4a-b96258cbc04c
relation.isAuthorOfPublicatione6727f44-0bf0-46be-9cea-e0b9b33e557b
relation.isAuthorOfPublication.latestForDiscovery23ae5b44-e89a-4c78-8e4a-b96258cbc04c

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