Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries

Details Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries

2002-04-30

arxiv.org/abs/cond-mat/0204637v1

Physics

Condensed Matter

6 pages, 3 figures. Submitted to Phys. Rev. Lett

Scientific paper

A rigorous microscopic theory for the description of quantum-transport phenomena in systems with open boundaries is proposed. We shall show that the application of the conventional Wigner-function formalism to this problem leads to unphysical results, like injection of coherent electronic states from the contacts. To overcome such basic limitation, we propose a generalization of the standard Wigner-function formulation, able to properly describe the incoherent nature of carrier injection at the device spatial boundaries as well as the interplay between phase coherence and energy relaxation/dephasing within the device active region. The proposed theoretical scheme constitutes the first rigorous derivation of the phenomenological injection model commonly employed in the simulation of open quantum devices.

Affiliated with

Also associated with

No associations

Rating

Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries 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 Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-626069