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Nanoelectromechanical Heat Engine Based on Electron-Electron Interaction

Anton Vikström (Institutionen för fysik, Kondenserade materiens teori (Chalmers)) ; Axel Martin Eriksson (Institutionen för fysik, Kondenserade materiens teori (Chalmers)) ; S. I. Kulinich ; Leonid Y. Gorelik (Institutionen för fysik, Kondenserade materiens teori (Chalmers))
Physical Review Letters (0031-9007). Vol. 117 (2016), 24,
[Artikel, refereegranskad vetenskaplig]

We theoretically show that a nanoelectromechanical system can be mechanically actuated by a heat flow through it via an electron-electron interaction. In contrast to most known actuation mechanisms in similar systems, this new mechanism does not involve an electronic current nor external ac fields. Instead, the mechanism relies on deflection-dependent tunneling rates and a heat flow which is mediated by an electron-electron interaction while an electronic current through the device is prohibited by, for instance, a spin-valve effect. Therefore, the system resembles a nanoelectromechanical heat engine. We derive a criterion for the mechanical instability and estimate the amplitude of the resulting self-sustained oscillations. Estimations show that the suggested phenomenon can be studied using available experimental techniques.

Nyckelord: coulomb-blockade nanostructures, nanotube mechanical resonators, systems, shuttle, instability, dynamics, Physics



Denna post skapades 2017-01-13. Senast ändrad 2017-02-03.
CPL Pubid: 246863

 

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