Limitations in Cooling Electrons using Normal-Metal-Superconductor Tunnel Junctions

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorPekola, Jukka P.
dc.contributor.authorHeikkilä, T. T.
dc.contributor.authorSavin, A. M.
dc.contributor.authorFlyktman, J. T.
dc.contributor.authorGiazotto, F.
dc.contributor.authorHekking, F. W. J.
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-05-22T09:01:25Z
dc.date.available2015-05-22T09:01:25Z
dc.date.issued2004
dc.description.abstractWe demonstrate both theoretically and experimentally two limiting factors in cooling electrons using biased tunnel junctions to extract heat from a normal metal into a superconductor. First, when the injection rate of electrons exceeds the internal relaxation rate in the metal to be cooled, the electrons do not obey the Fermi-Dirac distribution, and the concept of temperature cannot be applied as such. Second, at low bath temperatures, states within the gap induce anomalous heating and yield a theoretical limit of the achievable minimum temperature.en
dc.description.versionPeer revieweden
dc.format.extent056804/1-4
dc.format.mimetypeapplication/pdfen
dc.identifier.citationPekola, Jukka & Heikkilä, T. T. & Savin, A. M. & Flyktman, J. T. & Giazotto, F. & Hekking, F. W. J. 2004. Limitations in Cooling Electrons using Normal-Metal-Superconductor Tunnel Junctions. Physical Review Letters. Volume 92, Issue 5. P. 056804/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.92.056804.en
dc.identifier.doi10.1103/physrevlett.92.056804
dc.identifier.issn0031-9007 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/16187
dc.identifier.urnURN:NBN:fi:aalto-201505222840
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Lettersen
dc.relation.ispartofseriesVolume 92, Issue 5
dc.rights© 2004 American Physical Society (APS). http://www.aps.org/en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordcooling electronsen
dc.subject.keywordtunnel junctionsen
dc.subject.keywordsuperconductorsen
dc.subject.otherPhysicsen
dc.titleLimitations in Cooling Electrons using Normal-Metal-Superconductor Tunnel Junctionsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen
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