Coherent transport through an interacting double quantum dot: Beyond sequential tunneling
Pedersen, Jonas LU ; Lassen, Benny ; Wacker, Andreas LU
and Hettler, Matthias H.
(2007)
In Physical Review B (Condensed Matter and Materials Physics)
75(23).
p.1-235314
- Abstract
- Various causes for negative differential conductance in transport through an interacting double quantum dot are investigated. Particular focus is given to the interplay between the renormalization of the energy levels due to the coupling to the leads and the decoherence of the states. The calculations are performed within a basis of many-particle eigenstates and we consider the dynamics given by the von Neumann equation taking into account also processes beyond sequential tunneling. A systematic comparison between the levels of approximation and also with different formalisms is performed. It is found that the current is qualitatively well described by sequential processes as long as the temperature is larger than the level broadening... (More)
- Various causes for negative differential conductance in transport through an interacting double quantum dot are investigated. Particular focus is given to the interplay between the renormalization of the energy levels due to the coupling to the leads and the decoherence of the states. The calculations are performed within a basis of many-particle eigenstates and we consider the dynamics given by the von Neumann equation taking into account also processes beyond sequential tunneling. A systematic comparison between the levels of approximation and also with different formalisms is performed. It is found that the current is qualitatively well described by sequential processes as long as the temperature is larger than the level broadening induced by the contacts. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/646219
- author
- Pedersen, Jonas
LU
; Lassen, Benny
; Wacker, Andreas
LU
and Hettler, Matthias H.
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 75
- issue
- 23
- pages
- 1 - 235314
- publisher
- American Physical Society
- external identifiers
-
- wos:000247624900086
- scopus:34347395962
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.75.235314
- language
- English
- LU publication?
- yes
- id
- e10d9730-71e2-4807-ba0b-c7a1d994c98d (old id 646219)
- date added to LUP
- 2016-04-01 16:33:59
- date last changed
- 2025-04-04 15:25:16
@article{e10d9730-71e2-4807-ba0b-c7a1d994c98d,
abstract = {{Various causes for negative differential conductance in transport through an interacting double quantum dot are investigated. Particular focus is given to the interplay between the renormalization of the energy levels due to the coupling to the leads and the decoherence of the states. The calculations are performed within a basis of many-particle eigenstates and we consider the dynamics given by the von Neumann equation taking into account also processes beyond sequential tunneling. A systematic comparison between the levels of approximation and also with different formalisms is performed. It is found that the current is qualitatively well described by sequential processes as long as the temperature is larger than the level broadening induced by the contacts.}},
author = {{Pedersen, Jonas and Lassen, Benny and Wacker, Andreas and Hettler, Matthias H.}},
issn = {{1098-0121}},
language = {{eng}},
number = {{23}},
pages = {{1--235314}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Coherent transport through an interacting double quantum dot: Beyond sequential tunneling}},
url = {{https://lup.lub.lu.se/search/files/4710587/1268491.pdf}},
doi = {{10.1103/PhysRevB.75.235314}},
volume = {{75}},
year = {{2007}},
}