Cooling of mechanical vibrations by heat flow
Artikel i vetenskaplig tidskrift, 2018

We theoretically consider a nanomechanical link between two metallic leads subject to a temperature drop. It is shown that mechanical dynamics of such system can be strongly affected by a heat flow through it via the position dependent electron-electron interaction, even though the electronic transport between leads is blocked. In particular, it is demonstrated that, under certain conditions, the stationary distribution of the excitations in the mechanical subsystem has a Boltzmann form with an effective temperature, which is much lower than the temperature of the environment; this seems rather counterintuitive. We also find that a change in the direction of the temperature gradient can result in the generation of mechanical vibrations rather than the heating of the mechanical subsystem.

Nanoelectromechanical system

Heat flow

Wigner distribution function


S.I. Kulinich

Institute for Low Temperature Physics and Engineering

Leonid Gorelik

Chalmers, Fysik, Kondenserade materiens teori

Low Temperature Physics

1063-777X (ISSN)

Vol. 44 12 1232-1232


Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik



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