eprintid: 10086290
rev_number: 17
eprint_status: archive
userid: 608
dir: disk0/10/08/62/90
datestamp: 2019-11-21 11:15:55
lastmod: 2021-09-20 22:24:38
status_changed: 2019-11-21 11:15:55
type: article
metadata_visibility: show
creators_name: Yan, C
creators_name: Pepper, M
creators_name: See, P
creators_name: Farrer, I
creators_name: Ritchie, DA
creators_name: Griffiths, J
title: Thermoelectric property of a one dimensional channel in the presence of a transverse magnetic field
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
note: This work is licensed under a Creative Commons Attribution 4.0 International License. The images
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abstract: We studied the thermal conduction through a quantum point contact (QPC), defined in a GaAs-AlxGa1-x 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.
date: 2019-11-11
date_type: published
publisher: AIP Publishing
official_url: https://doi.org/10.1063/1.5128906
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1720026
doi: 10.1063/1.5128906
lyricists_name: Pepper, Michael
lyricists_id: MPEPP38
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: public
publication: Applied Physics Letters
volume: 115
number: 20
article_number: 202102
citation:        Yan, C;    Pepper, M;    See, P;    Farrer, I;    Ritchie, DA;    Griffiths, J;      (2019)    Thermoelectric property of a one dimensional channel in the presence of a transverse magnetic field.                   Applied Physics Letters , 115  (20)    , Article 202102.  10.1063/1.5128906 <https://doi.org/10.1063/1.5128906>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10086290/1/1.5128906.pdf