Anomalous suppression of the shot noise in a nanoelectromechanical system

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dc.creatorHaupt, F.
dc.creatorCavaliere, F.
dc.creatorFazio, R.
dc.creatorSassetti, M.
dc.date2006-07-04
dc.date2006-07-10
dc.date.accessioned2026-07-07T07:39:19Z
dc.date.available2026-07-07T07:39:19Z
dc.descriptionIn this paper we report a relaxation-induced suppression of the noise for a single level quantum dot coupled to an oscillator with incoherent dynamics in the sequential tunneling regime. It is shown that relaxation induces qualitative changes in the transport properties of the dot, depending on the strength of the electron-phonon coupling and on the applied voltage. In particular, critical thresholds in voltage and relaxation are found such that a suppression below 1/2 of the Fano factor is possible. Additionally, the current is either enhanced or suppressed by increasing relaxation, depending on bias being greater or smaller than the above threshold. These results exist for any strength of the electron-phonon coupling and are confirmed by a four states toy model.
dc.description7 pages, 7 eps figures, submitted to PRB; minor changes in the introduction
dc.identifierhttps://arxiv.org/abs/cond-mat/0607080
dc.identifierhttp://arxiv.org/abs/cond-mat/0607080
dc.identifierPhys. Rev. B 74, 205328 (2006)
dc.identifierdoi:10.1103/PhysRevB.74.205328
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121406
dc.subjectMesoscale and Nanoscale Physics
dc.titleAnomalous suppression of the shot noise in a nanoelectromechanical system
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