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Thermoelectric Characterization of the Kondo Resonance in Nanowire Quantum Dots

Svilans, Artis LU ; Josefsson, Martin LU ; Burke, Adam M. LU ; Fahlvik, Sofia LU ; Thelander, Claes LU ; Linke, Heiner LU and Leijnse, Martin LU (2018) In Physical Review Letters 121(20).
Abstract

We experimentally verify hitherto untested theoretical predictions about the thermoelectric properties of Kondo correlated quantum dots (QDs). The specific conditions required for this study are obtained by using QDs epitaxially grown in nanowires, combined with a recently developed method for controlling and measuring temperature differences at the nanoscale. This makes it possible to obtain data of very high quality both below and above the Kondo temperature, and allows a quantitative comparison with theoretical predictions. Specifically, we verify that Kondo correlations can induce a polarity change of the thermoelectric current, which can be reversed either by increasing the temperature or by applying a magnetic field.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
121
issue
20
publisher
American Physical Society
external identifiers
  • scopus:85056666517
ISSN
0031-9007
DOI
10.1103/PhysRevLett.121.206801
language
English
LU publication?
yes
id
8a806477-b04b-4fb8-954e-154fc9c928f1
date added to LUP
2018-11-27 08:58:29
date last changed
2019-11-13 05:21:35
@article{8a806477-b04b-4fb8-954e-154fc9c928f1,
  abstract     = {<p>We experimentally verify hitherto untested theoretical predictions about the thermoelectric properties of Kondo correlated quantum dots (QDs). The specific conditions required for this study are obtained by using QDs epitaxially grown in nanowires, combined with a recently developed method for controlling and measuring temperature differences at the nanoscale. This makes it possible to obtain data of very high quality both below and above the Kondo temperature, and allows a quantitative comparison with theoretical predictions. Specifically, we verify that Kondo correlations can induce a polarity change of the thermoelectric current, which can be reversed either by increasing the temperature or by applying a magnetic field.</p>},
  articleno    = {206801},
  author       = {Svilans, Artis and Josefsson, Martin and Burke, Adam M. and Fahlvik, Sofia and Thelander, Claes and Linke, Heiner and Leijnse, Martin},
  issn         = {0031-9007},
  language     = {eng},
  month        = {11},
  number       = {20},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Thermoelectric Characterization of the Kondo Resonance in Nanowire Quantum Dots},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.121.206801},
  volume       = {121},
  year         = {2018},
}