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Increasing thermoelectric performance using coherent transport

Karlström, Olov LU ; Linke, Heiner LU ; Karlström, Gunnar LU and Wacker, Andreas LU (2011) In Physical Review B (Condensed Matter and Materials Physics) 84(11).
Abstract
We show that coherent electron transport through zero-dimensional systems can be used to tailor the shape of the system's transmission function. This quantum-engineering approach can be used to enhance the performance of quantum dots or molecules in thermal-to-electric power conversion. Specifically, we show that electron interference in a two-level system can substantially improve the maximum thermoelectric power and the efficiency at maximum power by suppressing parasitic charge flow near the Fermi energy and by reducing electronic heat conduction. We discuss possible realizations of this approach in molecular junctions or quantum dots.
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
84
issue
11
publisher
American Physical Society
external identifiers
  • wos:000295263600003
  • scopus:80053617917
ISSN
1098-0121
DOI
10.1103/PhysRevB.84.113415
language
English
LU publication?
yes
id
4df942a6-d23f-4e86-817b-4b7b86d2ad41 (old id 2179009)
date added to LUP
2011-10-25 16:48:25
date last changed
2017-09-24 03:55:49
@article{4df942a6-d23f-4e86-817b-4b7b86d2ad41,
  abstract     = {We show that coherent electron transport through zero-dimensional systems can be used to tailor the shape of the system's transmission function. This quantum-engineering approach can be used to enhance the performance of quantum dots or molecules in thermal-to-electric power conversion. Specifically, we show that electron interference in a two-level system can substantially improve the maximum thermoelectric power and the efficiency at maximum power by suppressing parasitic charge flow near the Fermi energy and by reducing electronic heat conduction. We discuss possible realizations of this approach in molecular junctions or quantum dots.},
  articleno    = {113415},
  author       = {Karlström, Olov and Linke, Heiner and Karlström, Gunnar and Wacker, Andreas},
  issn         = {1098-0121},
  language     = {eng},
  number       = {11},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Increasing thermoelectric performance using coherent transport},
  url          = {http://dx.doi.org/10.1103/PhysRevB.84.113415},
  volume       = {84},
  year         = {2011},
}