Suppression of thermal fluctuations of nanomechanical resonator (ground state cooling) by thermally activated electronic flow
Paper i proceeding, 2011

We consider a doubly clamped suspended metallic carbon nanotube in which extra charge is injected from the tipof a scanning tunneling microscopy (STM). Our analysis shows that the quantum superposition between the different inelastic electronic tunneling paths can be controlled by the bias voltage. In particular, we find that below Coulomb blockade threshold the vibron emission induced by thermally activated electron transportation can be significantly reduced in comparison to the vibron absorption. As a consequence a net suppression of the thermal fluctuations ("cooling") of the vibrational degrees of freedom can be achieved. © 2011 IEEE.

Författare

Leonid Gorelik

Chalmers, Teknisk fysik, Kondenserade materiens teori

Fabio Santandrea

Göteborgs universitet

Robert I. Shekhter

Göteborgs universitet

Mats Jonson

Göteborgs universitet

21st International Conference on Noise and Fluctuations, ICNF 2011; Toronto, ON; 12 June 2011 through 16 June 2011

223-226

Ämneskategorier

Fysik

DOI

10.1109/ICNF.2011.5994306

ISBN

978-145770192-4