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arXiv · 0902.3544

Counting statistics of cotunneling electrons

Clive Emary
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Abstract

We describe a method for calculating the counting statistics of electronic transport through nanoscale devices with both sequential and cotunneling contributions. The method is based upon a perturbative expansion of the von Neumann equation in Liouvillian space, with current cumulants calculated from the resulting nonMarkovian master equation without further approximation. As application, we consider transport through a single quantum dot and discuss the effects of cotunneling on noise and skewness, as well as the properties of various approximation schemes.

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Clive Emary. 2009-02-20. Counting statistics of cotunneling electrons. https://doi.org/10.1103/physrevb.80.235306

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