2024-03-29T06:14:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1159712018-09-13T09:29:46Zcom_10261_2855com_10261_4col_10261_2857
Experimental verification of reciprocity relations in quantum thermoelectric transport
Matthews, J.
Battista, F.
Sánchez, David
Samuelsson, P.
Linke, H.
National Science Foundation (US)
European Science Foundation
Swedish Foundation for Strategic Research
Ministerio de Economía y Competitividad (España)
Air Force Office of Scientific Research (US)
© 2014 American Physical Society. 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.
2015-06-01T10:22:41Z
2015-06-01T10:22:41Z
2014-10-15
2015-06-01T10:22:42Z
artículo
Physical Review - Section B - Condensed Matter 90(16): (2014)
http://hdl.handle.net/10261/115971
10.1103/PhysRevB.90.165428
http://dx.doi.org/10.13039/100000001
http://dx.doi.org/10.13039/501100000782
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/100000181
eng
Publisher's version
http://dx.doi.org/10.1103/PhysRevB.90.165428
Sí
http://creativecommons.org/licenses/by/3.0/
openAccess
American Physical Society