We investigate instability and dynamical properties of nanoelectromechanical systems represented by a single-electron device containing movable quantum dot attached to a vibrating cantilever via asymmetric tunnel contact. The Kondo resonance in electron tunneling between source and shuttle facilitates self-sustained oscillations originated from strong coupling of mechanical and electronic/spin degrees of freedom. We analyze stability diagram for two-channel Kondo shuttling regime due to limitations given by the electromotive force acting on a moving shuttle and find that the saturation amplitude of oscillation is associated with the retardation effect of Kondo-cloud. The results shed light on possible ways of experimental realization of dynamical probe for the Kondo-cloud by using high tunability of mechanical dissipation as well as supersensitive detection of mechanical displacement.
@article{arxiv.1311.2317,
title = {Self-sustained oscillations in nanoelectromechanical systems induced by Kondo resonance},
author = {Taegeun Song and Mikhail N. Kiselev and Konstantin Kikoin and Robert I. Shekhter and Leonid Y. Gorelik},
journal= {arXiv preprint arXiv:1311.2317},
year = {2014}
}