Full counting statistics of nano-electromechanical systems

Details Full counting statistics of nano-electromechanical systems Full counting statistics of nano-electromechanical systems

2004-10-13

arxiv.org/abs/cond-mat/0410322v2

Europhys. Lett., 69 (3), pp. 475-481 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures; minor changes - final version as published in Europhys. Lett

Scientific paper

10.1209/epl/i2004-10351-x

We develop a theory for the full counting statistics (FCS) for a class of nanoelectromechanical systems (NEMS), describable by a Markovian generalized master equation. The theory is applied to two specific examples of current interest: vibrating C60 molecules and quantum shuttles. We report a numerical evaluation of the first three cumulants for the C60-setup; for the quantum shuttle we use the third cumulant to substantiate that the giant enhancement in noise observed at the shuttling transition is due to a slow switching between two competing conduction channels. Especially the last example illustrates the power of the FCS.

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