Cooling of mechanical vibrations by heat flow
Journal article, 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.

Heat flow

Wigner distribution function

Nanoelectromechanical system

Author

S.I. Kulinich

Institute for Low Temperature Physics and Engineering

Leonid Gorelik

Chalmers, Physics, Condensed Matter Theory

Low Temperature Physics

1063-777X (ISSN) 1090-6517 (eISSN)

Vol. 44 12 1232-1232

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1063/1.5078519

More information

Latest update

3/15/2019