Volume 69, Number 3, February 2005
|Page(s)||475 - 481|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||24 December 2004|
Full counting statistics of nano-electromechanical systems
MIC, Department of Micro and Nanotechnology, Technical University of Denmark DTU, Building 345east - DK-2800 Kongens Lyngby, Denmark
2 Department of Electronic Structures, Faculty of Mathematics and Physics Charles University - Ke Karlovu 5, 121 16 Prague, Czech Republic
Corresponding author: email@example.com
Accepted: 18 November 2004
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 -molecules and quantum shuttles. We report a numerical evaluation of the first three cumulants for the 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.
PACS: 85.85.+j – Micro- and nano-electromechanical systems (MEMS/NEMS) and devices / 72.70.+m – Noise processes and phenomena / 73.23.Hk – Coulomb blockade; single-electron tunneling
© EDP Sciences, 2005
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