Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries
| dc.creator | Zaccaria, Remo Proietti | |
| dc.creator | Rossi, Fausto | |
| dc.date | 2002-04-30 | |
| dc.date.accessioned | 2026-07-07T02:45:16Z | |
| dc.date.available | 2026-07-07T02:45:16Z | |
| dc.description | 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. | |
| dc.description | 6 pages, 3 figures. Submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0204637 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0204637 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/19239 | |
| dc.subject | Condensed Matter | |
| dc.title | Generalized Wigner Function Formulation for Quantum Systems with Open Boundaries | |
| dc.type | text |