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Tunneling through nanosystems: Combining broadening with many-particle states

Pedersen, Jonas LU and Wacker, Andreas LU (2005) In Physical Review B (Condensed Matter and Materials Physics) 72(19). p.1-195330
Abstract
We suggest an approach for transport through finite systems based on the Liouville equation. By working in a basis of many-particle states for the finite system, Coulomb interactions are taken fully into account and correlated transitions by up to two different contact states are included. This latter extends standard rate equation models by including level-broadening effects. The main result of the paper is a general expression for the elements of the density matrix of the finite size system, which can be applied whenever the eigenstates and the couplings to the leads are known. The approach works for arbitrary bias and for temperatures above the Kondo temperature. We apply the approach to standard models and good agreement with other... (More)
We suggest an approach for transport through finite systems based on the Liouville equation. By working in a basis of many-particle states for the finite system, Coulomb interactions are taken fully into account and correlated transitions by up to two different contact states are included. This latter extends standard rate equation models by including level-broadening effects. The main result of the paper is a general expression for the elements of the density matrix of the finite size system, which can be applied whenever the eigenstates and the couplings to the leads are known. The approach works for arbitrary bias and for temperatures above the Kondo temperature. We apply the approach to standard models and good agreement with other methods in their respective regime of validity is found. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
72
issue
19
pages
1 - 195330
publisher
American Physical Society
external identifiers
  • wos:000233603700097
  • scopus:29744456107
ISSN
1098-0121
DOI
10.1103/PhysRevB.72.195330
language
English
LU publication?
yes
id
503753d5-55d8-4b87-9165-dcba44e18ae7 (old id 211393)
date added to LUP
2007-10-05 12:06:04
date last changed
2017-11-05 04:26:40
@article{503753d5-55d8-4b87-9165-dcba44e18ae7,
  abstract     = {We suggest an approach for transport through finite systems based on the Liouville equation. By working in a basis of many-particle states for the finite system, Coulomb interactions are taken fully into account and correlated transitions by up to two different contact states are included. This latter extends standard rate equation models by including level-broadening effects. The main result of the paper is a general expression for the elements of the density matrix of the finite size system, which can be applied whenever the eigenstates and the couplings to the leads are known. The approach works for arbitrary bias and for temperatures above the Kondo temperature. We apply the approach to standard models and good agreement with other methods in their respective regime of validity is found.},
  author       = {Pedersen, Jonas and Wacker, Andreas},
  issn         = {1098-0121},
  language     = {eng},
  number       = {19},
  pages        = {1--195330},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Tunneling through nanosystems: Combining broadening with many-particle states},
  url          = {http://dx.doi.org/10.1103/PhysRevB.72.195330},
  volume       = {72},
  year         = {2005},
}