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Modeling of cotunneling in quantum dot systems

Pedersen, Jonas LU and Wacker, Andreas LU (2010) International Conference on Frontiers of Quantum and Mesoscopic Thermodynamics (FQMT '08) In Physica E-Low-Dimensional Systems & Nanostructures 42(3). p.595-599
Abstract
Transport through nanosystems is treated within the second-order von Neumann approach. This approach bridges the gap between rate equations which neglect level broadening and cotunneling, and the transmission formalism, which is essentially based on the single-particle picture thereby treating many-particle interactions oil an approximate level. Here we provide an alternative presentation of the method in order to clarify the underlying structure. Furthermore we apply it to the problem of cotunneling. It is shown that both elastic and inelastic cotunneling can be described quantitatively, while the transmission approach with a mean-field treatment of the interaction provides an artificial bistability. (C) 2009 Elsevier B.V. All rights... (More)
Transport through nanosystems is treated within the second-order von Neumann approach. This approach bridges the gap between rate equations which neglect level broadening and cotunneling, and the transmission formalism, which is essentially based on the single-particle picture thereby treating many-particle interactions oil an approximate level. Here we provide an alternative presentation of the method in order to clarify the underlying structure. Furthermore we apply it to the problem of cotunneling. It is shown that both elastic and inelastic cotunneling can be described quantitatively, while the transmission approach with a mean-field treatment of the interaction provides an artificial bistability. (C) 2009 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Transport, Master equation, Quantum dots
in
Physica E-Low-Dimensional Systems & Nanostructures
volume
42
issue
3
pages
595 - 599
publisher
Elsevier
conference name
International Conference on Frontiers of Quantum and Mesoscopic Thermodynamics (FQMT '08)
external identifiers
  • wos:000274954500067
  • scopus:74149093537
ISSN
1386-9477
DOI
10.1016/j.physe.2009.06.069
language
English
LU publication?
yes
id
c1543ff1-9979-489b-a816-f8517272efde (old id 1568063)
alternative location
http://arxiv.org/abs/0904.3249v2
date added to LUP
2010-03-24 10:55:17
date last changed
2018-05-29 11:49:29
@inproceedings{c1543ff1-9979-489b-a816-f8517272efde,
  abstract     = {Transport through nanosystems is treated within the second-order von Neumann approach. This approach bridges the gap between rate equations which neglect level broadening and cotunneling, and the transmission formalism, which is essentially based on the single-particle picture thereby treating many-particle interactions oil an approximate level. Here we provide an alternative presentation of the method in order to clarify the underlying structure. Furthermore we apply it to the problem of cotunneling. It is shown that both elastic and inelastic cotunneling can be described quantitatively, while the transmission approach with a mean-field treatment of the interaction provides an artificial bistability. (C) 2009 Elsevier B.V. All rights reserved.},
  author       = {Pedersen, Jonas and Wacker, Andreas},
  booktitle    = {Physica E-Low-Dimensional Systems & Nanostructures},
  issn         = {1386-9477},
  keyword      = {Transport,Master equation,Quantum dots},
  language     = {eng},
  number       = {3},
  pages        = {595--599},
  publisher    = {Elsevier},
  title        = {Modeling of cotunneling in quantum dot systems},
  url          = {http://dx.doi.org/10.1016/j.physe.2009.06.069},
  volume       = {42},
  year         = {2010},
}