Adiabaticity in semiclassical nanoelectromechanical systems

Details Adiabaticity in semiclassical nanoelectromechanical systems Adiabaticity in semiclassical nanoelectromechanical systems

2011-07-19

arxiv.org/abs/1107.3762v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 5 figures

Scientific paper

10.1103/PhysRevB.84.155455

We compare the semiclassical description of NEMS within and beyond the adiabatic approximation. We consider a NEMS model which contains a single phonon (oscillator) mode linearly coupled to an electronic few-level system in contact with external particle reservoirs (leads). Using Feynman-Vernon influence functional theory, we derive a Langevin equation for the oscillator trajectory that is non-perturbative in the system-leads coupling. A stationary electronic current through the system generates nontrivial dynamical behavior of the oscillator, even in the adiabatic regime. The 'backaction' of the oscillator onto the current is studied as well. For the two simplest cases of one and two coupled electronic levels, we discuss the differences between the adiabatic and the non-adiabatic regime of the oscillator dynamics.

Affiliated with

Also associated with

No associations

Rating

Adiabaticity in semiclassical nanoelectromechanical systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Adiabaticity in semiclassical nanoelectromechanical systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adiabaticity in semiclassical nanoelectromechanical systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-514896