Thermopower as a tool to investigate many-body effects in quantum systems
Kristinsdottir, Liney Halla LU ; Bengtsson, Jakob LU ; Linke, Heiner LU
; Reimann, Stephanie
LU
and Wacker, Andreas
LU
(2014)
In Applied Physics Letters
105(8).
- Abstract
- Measuring the thermopower of a confined quantum system reveals important information about its excitation spectrum. Our simulations show how this kind of transport spectroscopy is able to extract a clear signal for the onset of Wigner localization in a nanowire segment. This demonstrates that thermopower measurements provide a tool for investigating complex many-body quantum effects, which is less intrusive than the usual charge-stability diagram as no high source-drain bias is required. While the effect is most pronounced for weak tunnel coupling and low temperatures, the excited states also significantly affect the thermopower spectrum at moderate temperature, adding distinct features to the characteristic thermopower lineshape. (C) 2014... (More)
- Measuring the thermopower of a confined quantum system reveals important information about its excitation spectrum. Our simulations show how this kind of transport spectroscopy is able to extract a clear signal for the onset of Wigner localization in a nanowire segment. This demonstrates that thermopower measurements provide a tool for investigating complex many-body quantum effects, which is less intrusive than the usual charge-stability diagram as no high source-drain bias is required. While the effect is most pronounced for weak tunnel coupling and low temperatures, the excited states also significantly affect the thermopower spectrum at moderate temperature, adding distinct features to the characteristic thermopower lineshape. (C) 2014 AIP Publishing LLC. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4800360
- author
- Kristinsdottir, Liney Halla
LU
; Bengtsson, Jakob
LU
; Linke, Heiner
LU
; Reimann, Stephanie
LU
and Wacker, Andreas
LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics Letters
- volume
- 105
- issue
- 8
- article number
- 083105
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000342753500063
- scopus:84907377129
- ISSN
- 0003-6951
- DOI
- 10.1063/1.4893928
- language
- English
- LU publication?
- yes
- id
- 292a8806-441c-47e0-b2a8-9434bb6f1446 (old id 4800360)
- date added to LUP
- 2016-04-01 10:36:25
- date last changed
- 2023-08-31 06:57:31
@article{292a8806-441c-47e0-b2a8-9434bb6f1446,
abstract = {{Measuring the thermopower of a confined quantum system reveals important information about its excitation spectrum. Our simulations show how this kind of transport spectroscopy is able to extract a clear signal for the onset of Wigner localization in a nanowire segment. This demonstrates that thermopower measurements provide a tool for investigating complex many-body quantum effects, which is less intrusive than the usual charge-stability diagram as no high source-drain bias is required. While the effect is most pronounced for weak tunnel coupling and low temperatures, the excited states also significantly affect the thermopower spectrum at moderate temperature, adding distinct features to the characteristic thermopower lineshape. (C) 2014 AIP Publishing LLC.}},
author = {{Kristinsdottir, Liney Halla and Bengtsson, Jakob and Linke, Heiner and Reimann, Stephanie and Wacker, Andreas}},
issn = {{0003-6951}},
language = {{eng}},
number = {{8}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Applied Physics Letters}},
title = {{Thermopower as a tool to investigate many-body effects in quantum systems}},
url = {{https://lup.lub.lu.se/search/files/1983875/4905334.pdf}},
doi = {{10.1063/1.4893928}},
volume = {{105}},
year = {{2014}},
}