Yan, C., Pepper, M., See, P. et al. (3 more authors) (2019) Thermoelectric property of a one dimensional channel in the presence of a transverse magnetic field. Applied Physics Letters, 115 (20). 202102. ISSN 0003-6951
Abstract
We studied the thermal conduction through a quantum point contact (QPC), defined in a GaAs-AlxGa1x As heterostructure, in the presence of a transverse magnetic field. A shift in the position of a thermo-voltage peak is observed with increasing field. The position of the thermo-voltage peak follows the Cutler-Mott relation in the small field regime (B < 0.5 T); it starts diverging from the Cutler-Mott relation in the moderate field regime, where a cubic magnetic field term dominates over the trivial quadratic term; eventually, the shift saturates in the large field regime (B > 3.0 T). Our results suggest that additional calibration is necessary when using QPC as thermometry, especially when the transverse magnetic field is applied.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 27 Nov 2019 15:42 |
Last Modified: | 27 Nov 2019 15:42 |
Status: | Published |
Publisher: | AIP Publishing |
Refereed: | Yes |
Identification Number: | 10.1063/1.5128906 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:153965 |