Low Temperature Physics: 44, 816 (2018); https://doi.org/10.1063/1.5049164
Fizika Nizkikh Temperatur: Volume 44, Number 8 (August 2018), p. 1041-1044    ( to contents , go back )

On new friction mechanism in nanoelectromechanical systems

O.A. Ilinskaya

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
E-mail: ilinskaya@ilt.kharkov.ua

Received June 14, 2018

Abstract

A new friction mechanism in nanoelectromechanical systems is proposed. The model considered comprises a movable quantum dot, placed in electric field and tunnel coupled to an electron reservoir held at fixed temperature. By using density operator method, in perturbation theory over the parameter of level width divided by temperature, it was shown that intrinsic friction with non-monotonic temperature dependence appears in the system. The feasibility of using the obtained result to find an instability domain in shuttle structures is dis-cussed.

PACS: 81.07.Oj Nanoelectromechanical systems;
PACS: 73.23.Hk Single-electron tunneling.

Key words: nanoelectromechanical systems, single-electron tunneling, friction coefficient.

Published online: June 27, 2018

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