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Detection of ultrafast oscillations in superconducting point contacts by means of supercurrent measurements

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
hal.structure.identifierDonostia International Physics Center DIPC
dc.contributor.authorAVRILLER, Rémi
hal.structure.identifierDonostia International Physics Center DIPC
hal.structure.identifierCentro de Fisica de Materiales [CFM-MPC]
dc.contributor.authorBERGERET, F. S.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorPISTOLESI, Fabio
dc.date.created2011-11-04
dc.date.issued2011-11-03
dc.identifier.issn1098-0121
dc.description.abstractEnWe present a microscopic calculation of the nondissipative current through a superconducting quantum point contact coupled to a mechanical oscillator. Using the non-equilibrium Keldysh Green function approach, we determine the current-phase relation. The latter shows that at certain phases, the current is sharply suppressed. These dips in the current-phase relation provide information about the oscillating frequency and coupling strength of the mechanical oscillator. We also present an effective two-level model from which we obtain analytical expressions describing the position and width of the dips. Our findings are of relevance for nanomechanical resonators based on superconducting materials.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enDetection of ultrafast oscillations in superconducting point contacts by means of supercurrent measurements
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.84.195415
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Autre [cond-mat.other]
dc.identifier.arxiv1107.5167
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page195415 (1-8)
bordeaux.volume84
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-00664434
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.pl85.85.+j
dc.subject.pl73.23.-b
dc.subject.pl74.40.Gh
dc.subject.pl74.50.+r
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00664434v1
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