Thermodynamic nature of the 0-π quantum transition in superconductor/ferromagnet/superconductor trilayers
| hal.structure.identifier | Dipartimento di Ingegneria [Roma] | |
| dc.contributor.author | POMPEO, N. | |
| hal.structure.identifier | Dipartimento di Ingegneria [Roma] | |
| dc.contributor.author | TOROKHTII, K. | |
| hal.structure.identifier | CNR-SPIN Salerno and Dipartimento di Fisica "E. R. CAianiello" | |
| dc.contributor.author | CIRILLO, C. | |
| hal.structure.identifier | Institute for Physics of Microstructures of the RAS | |
| hal.structure.identifier | Lobachevsky State University of Nizhny Novgorod | |
| dc.contributor.author | SAMOKHVALOV, A. V. | |
| hal.structure.identifier | CNR-SPIN Salerno and Dipartimento di Fisica "E. R. CAianiello" | |
| dc.contributor.author | ILYINA, E. A. | |
| hal.structure.identifier | CNR-SPIN Salerno and Dipartimento di Fisica "E. R. CAianiello" | |
| dc.contributor.author | ATTANASIO, C. | |
| hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
| dc.contributor.author | BUZDIN, Alexandre I. | |
| hal.structure.identifier | Dipartimento di Ingegneria [Roma] | |
| dc.contributor.author | SILVA, E. | |
| dc.date.created | 2014-01-15 | |
| dc.date.issued | 2014-08-21 | |
| dc.identifier.issn | 1098-0121 | |
| dc.description.abstractEn | In 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.sponsorship | Etats de Majorana et d'Andreev dans des circuits hybrides combinant des matériaux magnétiques et supraconducteurs - ANR-12-BS04-0016 | |
| dc.language.iso | en | |
| dc.publisher | American Physical Society | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc/ | |
| dc.subject.en | Multilayers | |
| dc.subject.en | superlattices | |
| dc.subject.en | Magnetic properties including vortex structures and related phenomena | |
| dc.subject.en | Proximity effects | |
| dc.subject.en | Andreev reflection | |
| dc.subject.en | SN and SNS junctions | |
| dc.subject.en | Surface impedance | |
| dc.subject.en | heterostructures | |
| dc.title.en | Thermodynamic nature of the 0-π quantum transition in superconductor/ferromagnet/superconductor trilayers | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1103/PhysRevB.90.064510 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con] | |
| dc.identifier.arxiv | 1408.0665 | |
| bordeaux.journal | Physical Review B: Condensed Matter and Materials Physics (1998-2015) | |
| bordeaux.page | 064510 (1-7) | |
| bordeaux.volume | 90 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01071839 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01071839v1 | |
| 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=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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