Decoherence of the Kondo Singlet Caused by Phase-sensitive Detection

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dc.creatorChen, Ming-Lun
dc.date2008-01-03
dc.date2008-01-08
dc.date.accessioned2026-07-07T08:52:45Z
dc.date.available2026-07-07T08:52:45Z
dc.descriptionWe investigate the dephasing effect of the Kondo singlet in an Aharonov-Bohm interferometer with a quantum dot coupling to left and right electrodes. By employing the cluster expansions, the equations of motion of Green functions are transformed into the corresponding equation of motion of connected Green functions, which contains the correlation of two conduction electrons beyond the Lacroix approximation. With the method we show that the Kondo resonance is suppressed by phase-sensitive detection of Aharonov-Bohm interferometer. Our numerical results have provided a qualitative explanation with the anomalous features observed in a recent experiment by Avinun-Kalish \emph{et al}. [Phys. Rev. Lett. \textbf{92}, 156801 (2004)].
dc.description11 pages, 3 figures, 15 references
dc.identifierhttps://arxiv.org/abs/0801.0539
dc.identifierhttp://arxiv.org/abs/0801.0539
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145386
dc.subjectStrongly Correlated Electrons
dc.subjectOther Condensed Matter
dc.titleDecoherence of the Kondo Singlet Caused by Phase-sensitive Detection
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