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dc.contributor.authorGiazotto, F.
dc.contributor.authorHeikkilä, Tero
dc.contributor.authorBergeret, F.S.
dc.date.accessioned2015-02-18T08:37:58Z
dc.date.available2015-02-18T08:37:58Z
dc.date.issued2015
dc.identifier.citationGiazotto, F., Heikkilä, T., & Bergeret, F.S. (2015). Very Large Thermophase in Ferromagnetic Josephson Junctions. <i>Physical Review Letters</i>, <i>114</i>(6), Article 067001. <a href="https://doi.org/10.1103/PhysRevLett.114.067001" target="_blank">https://doi.org/10.1103/PhysRevLett.114.067001</a>
dc.identifier.otherCONVID_24564823
dc.identifier.otherTUTKAID_65304
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/45351
dc.description.abstract[Abstract.] The concept of thermophase refers to the appearance of a phase gradient inside a superconductor originating from the presence of an applied temperature bias across it. The resulting supercurrent flow may, in suitable conditions, fully counterbalance the temperature-bias-induced quasiparticle current therefore preventing the formation of any voltage drop, i.e., a thermovoltage, across the superconductor. Yet, the appearance of a thermophase is expected to occur in Josephson-coupled superconductors as well. Here, we theoretically investigate the thermoelectric response of a thermally biased Josephson junction based on a ferromagnetic insulator. In particular, we predict the occurrence of a very large thermophase that can reach π = 2 across the contact for suitable temperatures and structure parameters; i.e., the quasiparticle thermal current can reach the critical current. Such a thermophase can be several orders of magnitude larger than that predicted to occur in conventional Josephson tunnel junctions. In order to assess experimentally the predicted very large thermophase, we propose a realistic setup realizable with state-of-the-art nano- fabrication techniques and well-established materials, based on a superconducting quantum interference device. This effect could be of strong relevance in several low-temperature applications, for example, for revealing tiny temperature differences generated by coupling the electromagnetic radiation to one of the superconductors forming the junction.fi
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Letters
dc.subject.otherJosephson-Junctions
dc.titleVery Large Thermophase in Ferromagnetic Josephson Junctions
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201502161323
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineFysiikkafi
dc.contributor.oppiaineNanoscience Centerfi
dc.contributor.oppiainePhysicsen
dc.contributor.oppiaineNanoscience Centeren
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-02-16T16:30:09Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn0031-9007
dc.relation.numberinseries6
dc.relation.volume114
dc.type.versionpublishedVersion
dc.rights.copyright© American Physical Society 2015. This is a version of an article whose final and definitive form has been published by American Physical Society.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://journals.aps.org/authors/transfer-of-copyright-agreement
dc.relation.doi10.1103/PhysRevLett.114.067001


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Ellei muuten mainita, aineiston lisenssi on © American Physical Society 2015. This is a version of an article whose final and definitive form has been published by American Physical Society.