Advanced

Experimental verification of reciprocity relations in quantum thermoelectric transport

Matthews, J.; Battista, Francesca LU ; Sanchez, D.; Samuelsson, Peter LU and Linke, Heiner LU (2014) In Physical Review B (Condensed Matter and Materials Physics) 90(16).
Abstract
Fundamental symmetries in thermoelectric quantum transport, beyond Onsagers relations, were predicted two decades ago but have to date not been observed in experiments. Recent works have predicted the symmetries to be sensitive to energy-dependent, inelastic scattering, raising the question whether they exist in practice. Here, we answer this question affirmatively by experimentally verifying the thermoelectric reciprocity relations in a four-terminal mesoscopic device where each terminal can be electrically and thermally biased individually. The linear-response thermoelectric coefficients are found to be symmetric under simultaneous reversal of magnetic field and exchange of injection and emission contacts. We also demonstrate a... (More)
Fundamental symmetries in thermoelectric quantum transport, beyond Onsagers relations, were predicted two decades ago but have to date not been observed in experiments. Recent works have predicted the symmetries to be sensitive to energy-dependent, inelastic scattering, raising the question whether they exist in practice. Here, we answer this question affirmatively by experimentally verifying the thermoelectric reciprocity relations in a four-terminal mesoscopic device where each terminal can be electrically and thermally biased individually. The linear-response thermoelectric coefficients are found to be symmetric under simultaneous reversal of magnetic field and exchange of injection and emission contacts. We also demonstrate a controllable breakdown of the reciprocity relations by increasing thermal bias, putting in prospect enhanced thermoelectric performance. (Less)
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
90
issue
16
publisher
American Physical Society
external identifiers
  • wos:000344022800008
  • scopus:84908190326
ISSN
1098-0121
DOI
10.1103/PhysRevB.90.165428
language
English
LU publication?
yes
id
45e36892-626b-4424-ad86-32bdc16be805 (old id 4875148)
date added to LUP
2014-12-30 14:23:29
date last changed
2017-11-05 04:12:02
@article{45e36892-626b-4424-ad86-32bdc16be805,
  abstract     = {Fundamental symmetries in thermoelectric quantum transport, beyond Onsagers relations, were predicted two decades ago but have to date not been observed in experiments. Recent works have predicted the symmetries to be sensitive to energy-dependent, inelastic scattering, raising the question whether they exist in practice. Here, we answer this question affirmatively by experimentally verifying the thermoelectric reciprocity relations in a four-terminal mesoscopic device where each terminal can be electrically and thermally biased individually. The linear-response thermoelectric coefficients are found to be symmetric under simultaneous reversal of magnetic field and exchange of injection and emission contacts. We also demonstrate a controllable breakdown of the reciprocity relations by increasing thermal bias, putting in prospect enhanced thermoelectric performance.},
  articleno    = {165428},
  author       = {Matthews, J. and Battista, Francesca and Sanchez, D. and Samuelsson, Peter and Linke, Heiner},
  issn         = {1098-0121},
  language     = {eng},
  number       = {16},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Experimental verification of reciprocity relations in quantum thermoelectric transport},
  url          = {http://dx.doi.org/10.1103/PhysRevB.90.165428},
  volume       = {90},
  year         = {2014},
}