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Counting statistics for mesoscopic conductors with internal degrees of freedom

Research output: Contribution to journalJournal articlepeer-review

Published
Article number026801
<mark>Journal publication date</mark>6/07/2010
<mark>Journal</mark>Physical review letters
Issue number2
Volume105
Number of pages0
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We consider the transport of electrons passing through a mesoscopic device possessing internal dynamical quantum degrees of freedom. The mutual interaction between the system and the conduction electrons contributes to the current fluctuations, which we describe in terms of full counting statistics. We identify conditions where this discriminates coherent from incoherent internal dynamics and also identify and illustrate conditions under which the device acts to dynamically bunch transmitted or reflected electrons, thereby generating super-Poissonian noise.

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© 2010 The American Physical Society