Persistent current on a disordered mesoscopic ring with an embedded quantum dot

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We calculate the ensemble averaged persistent current on disordered mesoscopic rings with an embedded quantum dot. We model the quantum dot as a single resonance and use Random Matrix Theory to model the impurities in the ring. Using Efetov's supersymmetry technique, we develop an analytical expression for the current. We find not only one, but two resonance peaks in the current. This is interpreted as quantum interference phenomenon.
5 pages, 4 figures

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Mesoscale and Nanoscale Physics, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/105689

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0512684
 http://arxiv.org/abs/cond-mat/0512684

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arXiv