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Kondo Force in Shuttling Devices: Dynamical Probe for a Kondo Cloud

M. N. Kiselev ; K. A. Kikoin ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Robert I. Shekhter
Physical Review Letters (0031-9007). Vol. 110 (2013), 6, p. 066804.
[Artikel, refereegranskad vetenskaplig]

Abstract: We consider the electromechanical properties of a single-electronic device consisting of a movable quantum dot attached to a vibrating cantilever, forming a tunnel contact with a nonmovable source electrode. We show that the resonance Kondo tunneling of electrons amplifies exponentially the strength of nanoelectromechanical (NEM) coupling in such a device and make the latter insensitive to mesoscopic fluctuations of electronic levels in a nanodot. It is also shown that the study of a Kondo-NEM phenomenon provides additional (as compared with standard conductance measurements in a nonmechanical device) information on retardation effects in the formation of a many-particle cloud accompanying the Kondo tunneling. A possibility for superhigh tunability of mechanical dissipation as well as supersensitive detection of mechanical displacement is demonstrated.

Denna post skapades 2013-03-08. Senast ändrad 2013-03-11.
CPL Pubid: 174523


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Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)
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