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Heat Driven Transport in Serial Double Quantum Dot Devices

Dorsch, Sven LU ; Svilans, Artis LU ; Josefsson, Martin LU orcid ; Goldozian, Bahareh LU ; Kumar, Mukesh LU ; Thelander, Claes LU ; Wacker, Andreas LU orcid and Burke, Adam LU orcid (2021) In Nano Letters 21(2). p.988-994
Abstract

Studies of thermally induced transport in nanostructures provide access to an exciting regime where fluctuations are relevant, enabling the investigation of fundamental thermodynamic concepts and the realization of thermal energy harvesters. We study a serial double quantum dot formed in an InAs/InP nanowire coupled to two electron reservoirs. By means of a specially designed local metallic joule-heater, the temperature of the phonon bath in the vicinity of the double quantum dot can be enhanced. This results in phonon-assisted transport, enabling the conversion of local heat into electrical power in a nanosized heat engine. Simultaneously, the electron temperatures of the reservoirs are affected, resulting in conventional... (More)

Studies of thermally induced transport in nanostructures provide access to an exciting regime where fluctuations are relevant, enabling the investigation of fundamental thermodynamic concepts and the realization of thermal energy harvesters. We study a serial double quantum dot formed in an InAs/InP nanowire coupled to two electron reservoirs. By means of a specially designed local metallic joule-heater, the temperature of the phonon bath in the vicinity of the double quantum dot can be enhanced. This results in phonon-assisted transport, enabling the conversion of local heat into electrical power in a nanosized heat engine. Simultaneously, the electron temperatures of the reservoirs are affected, resulting in conventional thermoelectric transport. By detailed modeling and experimentally tuning the interdot coupling, we disentangle both effects. Furthermore, we show that phonon-assisted transport is sensitive to excited states. Our findings demonstrate the versatility of our design to study fluctuations and fundamental nanothermodynamics.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
nanowire, phonon assisted transport, quantum dot, thermal energy harvesters, thermoelectric effect
in
Nano Letters
volume
21
issue
2
pages
988 - 994
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:33459021
  • scopus:85100274840
ISSN
1530-6984
DOI
10.1021/acs.nanolett.0c04017
project
KAW Project: Nanothermodynamics for optoelectronic semiconductor devices
language
English
LU publication?
yes
id
570900a9-40b8-4caf-a5ec-ab0623ccfe28
date added to LUP
2021-02-12 11:18:34
date last changed
2025-02-07 07:39:38
@article{570900a9-40b8-4caf-a5ec-ab0623ccfe28,
  abstract     = {{<p>Studies of thermally induced transport in nanostructures provide access to an exciting regime where fluctuations are relevant, enabling the investigation of fundamental thermodynamic concepts and the realization of thermal energy harvesters. We study a serial double quantum dot formed in an InAs/InP nanowire coupled to two electron reservoirs. By means of a specially designed local metallic joule-heater, the temperature of the phonon bath in the vicinity of the double quantum dot can be enhanced. This results in phonon-assisted transport, enabling the conversion of local heat into electrical power in a nanosized heat engine. Simultaneously, the electron temperatures of the reservoirs are affected, resulting in conventional thermoelectric transport. By detailed modeling and experimentally tuning the interdot coupling, we disentangle both effects. Furthermore, we show that phonon-assisted transport is sensitive to excited states. Our findings demonstrate the versatility of our design to study fluctuations and fundamental nanothermodynamics. </p>}},
  author       = {{Dorsch, Sven and Svilans, Artis and Josefsson, Martin and Goldozian, Bahareh and Kumar, Mukesh and Thelander, Claes and Wacker, Andreas and Burke, Adam}},
  issn         = {{1530-6984}},
  keywords     = {{nanowire; phonon assisted transport; quantum dot; thermal energy harvesters; thermoelectric effect}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{988--994}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Heat Driven Transport in Serial Double Quantum Dot Devices}},
  url          = {{http://dx.doi.org/10.1021/acs.nanolett.0c04017}},
  doi          = {{10.1021/acs.nanolett.0c04017}},
  volume       = {{21}},
  year         = {{2021}},
}