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hal.structure.identifierDipartimento di Ingegneria [Roma]
dc.contributor.authorPOMPEO, N.
hal.structure.identifierDipartimento di Ingegneria [Roma]
dc.contributor.authorTOROKHTII, K.
hal.structure.identifierCNR-SPIN Salerno and Dipartimento di Fisica "E. R. CAianiello"
dc.contributor.authorCIRILLO, C.
hal.structure.identifierInstitute for Physics of Microstructures of the RAS
hal.structure.identifierLobachevsky State University of Nizhny Novgorod
dc.contributor.authorSAMOKHVALOV, A. V.
hal.structure.identifierCNR-SPIN Salerno and Dipartimento di Fisica "E. R. CAianiello"
dc.contributor.authorILYINA, E. A.
hal.structure.identifierCNR-SPIN Salerno and Dipartimento di Fisica "E. R. CAianiello"
dc.contributor.authorATTANASIO, C.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBUZDIN, Alexandre I.
hal.structure.identifierDipartimento di Ingegneria [Roma]
dc.contributor.authorSILVA, E.
dc.date.created2014-01-15
dc.date.issued2014-08-21
dc.identifier.issn1098-0121
dc.description.abstractEnIn structures made up of alternating superconducting and ferromagnet layers (S/F/S heterostructures), it is known that the macroscopic quantum wave function of the ground state changes its phase difference across the F layer from 0 to π under certain temperature and geometrical conditions, hence the name "0-π" for this crossover. We present here a joint experimental and theoretical demonstration that 0-π is a true thermodynamic phase transition. Microwave measurements of the temperature dependence of the London penetration depth in Nb/Pd0.84Ni0.16/Nb trilayers reveal a sudden, unusual decrease of the density of the superconducting condensate (square modulus of the macroscopic quantum wave function) with decreasing temperature, which is predicted by the theory here developed as a transition from the 0 state to the π state. Our result for the jump of the amplitude of the order parameter is a thermodynamic manifestation of such a temperature-driven quantum transition.
dc.description.sponsorshipEtats de Majorana et d'Andreev dans des circuits hybrides combinant des matériaux magnétiques et supraconducteurs - ANR-12-BS04-0016
dc.language.isoen
dc.publisherAmerican Physical Society
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.enMultilayers
dc.subject.ensuperlattices
dc.subject.enMagnetic properties including vortex structures and related phenomena
dc.subject.enProximity effects
dc.subject.enAndreev reflection
dc.subject.enSN and SNS junctions
dc.subject.enSurface impedance
dc.subject.enheterostructures
dc.title.enThermodynamic nature of the 0-π quantum transition in superconductor/ferromagnet/superconductor trilayers
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.90.064510
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con]
dc.identifier.arxiv1408.0665
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page064510 (1-7)
bordeaux.volume90
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-01071839
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01071839v1
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=2014-08-21&rft.volume=90&rft.issue=6&rft.spage=064510%20(1-7)&rft.epage=064510%20(1-7)&rft.eissn=1098-0121&rft.issn=1098-0121&rft.au=POMPEO,%20N.&TOROKHTII,%20K.&CIRILLO,%20C.&SAMOKHVALOV,%20A.%20V.&ILYINA,%20E.%20A.&rft.genre=article


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