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Lineshape of the thermopower of quantum dots

Fahlvik Svensson, Sofia LU ; Persson, Ann LU ; Hoffmann, E. A.; Nakpathomkun, N.; Nilsson, Henrik LU ; Xu, Hongqi LU ; Samuelson, Lars LU and Linke, Heiner LU (2012) In New Journal of Physics 14.
Abstract
Quantum dots are an important model system for thermoelectric phenomena, and may be used to enhance the thermal-to-electric energy conversion efficiency in functional materials, by tuning the Fermi energy relative to the dots' transmission resonances. It is therefore important to obtain a detailed understanding of a quantum dot's thermopower as a function of the Fermi energy. However, so far it has proven difficult to take the effects of interactions into account in the interpretation of experimental data. In this paper, we present detailed measurements of the thermopower of quantum dots defined in heterostructure nanowires. We show that the thermopower lineshape is described well by a Landauer-type transport model that uses as its input... (More)
Quantum dots are an important model system for thermoelectric phenomena, and may be used to enhance the thermal-to-electric energy conversion efficiency in functional materials, by tuning the Fermi energy relative to the dots' transmission resonances. It is therefore important to obtain a detailed understanding of a quantum dot's thermopower as a function of the Fermi energy. However, so far it has proven difficult to take the effects of interactions into account in the interpretation of experimental data. In this paper, we present detailed measurements of the thermopower of quantum dots defined in heterostructure nanowires. We show that the thermopower lineshape is described well by a Landauer-type transport model that uses as its input experimental values of the dot conductance, which contains information about interaction effects. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
New Journal of Physics
volume
14
publisher
IOP Publishing Ltd.
external identifiers
  • wos:000302371700005
  • scopus:84859619063
ISSN
1367-2630
DOI
10.1088/1367-2630/14/3/033041
language
English
LU publication?
yes
id
2f830629-6bc1-44b4-bca1-91a46f1ade80 (old id 2574936)
date added to LUP
2012-06-04 12:56:55
date last changed
2017-10-22 04:24:07
@article{2f830629-6bc1-44b4-bca1-91a46f1ade80,
  abstract     = {Quantum dots are an important model system for thermoelectric phenomena, and may be used to enhance the thermal-to-electric energy conversion efficiency in functional materials, by tuning the Fermi energy relative to the dots' transmission resonances. It is therefore important to obtain a detailed understanding of a quantum dot's thermopower as a function of the Fermi energy. However, so far it has proven difficult to take the effects of interactions into account in the interpretation of experimental data. In this paper, we present detailed measurements of the thermopower of quantum dots defined in heterostructure nanowires. We show that the thermopower lineshape is described well by a Landauer-type transport model that uses as its input experimental values of the dot conductance, which contains information about interaction effects.},
  author       = {Fahlvik Svensson, Sofia and Persson, Ann and Hoffmann, E. A. and Nakpathomkun, N. and Nilsson, Henrik and Xu, Hongqi and Samuelson, Lars and Linke, Heiner},
  issn         = {1367-2630},
  language     = {eng},
  publisher    = {IOP Publishing Ltd.},
  series       = {New Journal of Physics},
  title        = {Lineshape of the thermopower of quantum dots},
  url          = {http://dx.doi.org/10.1088/1367-2630/14/3/033041},
  volume       = {14},
  year         = {2012},
}