Probing quasiparticle excitations in a hybrid single electron transistor

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKnowles, H. S.
dc.contributor.authorMaisi, V. F.
dc.contributor.authorPekola, Jukka P.
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-05-19T09:01:47Z
dc.date.available2015-05-19T09:01:47Z
dc.date.issued2012
dc.description.abstractWe investigate the behavior of quasiparticles in a hybrid electron turnstile with the aim of improving its performance as a metrological current source. The device is used to directly probe the density of quasiparticles and monitor their relaxation into normal metal traps. We compare different trap geometries and reach quasiparticle densities below 3 μm−3 for pumping frequencies of 20 MHz. Our data show that quasiparticles are excited both by the device operation itself and by the electromagnetic environment of the sample. Our observations can be modelled on a quantitative level with a sequential tunnelingmodel and a simple diffusion equation.en
dc.description.versionPeer revieweden
dc.format.extent262601/1-4
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKnowles, H. S. & Maisi, V. F. & Pekola, Jukka. 2012. Probing quasiparticle excitations in a hybrid single electron transistor. Applied Physics Letters. Volume 100, Issue 26. P. 262601/1-4. ISSN 0003-6951 (printed). DOI: 10.1063/1.4730407.en
dc.identifier.doi10.1063/1.4730407
dc.identifier.issn0003-6951 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/16089
dc.identifier.urnURN:NBN:fi:aalto-201505192739
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.ispartofseriesApplied Physics Lettersen
dc.relation.ispartofseriesVolume 100, Issue 26
dc.rights© 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at http://scitation.aip.org/content/aip/journal/apl/100/26/10.1063/1.4730407en
dc.rights.holderAmerican Institute of Physics
dc.subject.keywordcollective excitationsen
dc.subject.keywordsuperconductivityen
dc.subject.keywordsuperconductor metalsen
dc.subject.keywordsuperconductorsen
dc.subject.keywordsuperconductivity modelsen
dc.subject.otherPhysicsen
dc.titleProbing quasiparticle excitations in a hybrid single electron transistoren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen
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