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Thermoelectric effects in a rectangular Aharonov-Bohm geometry

Pye, AJ, Faux, DA and Kearney, MJ (2016) Thermoelectric effects in a rectangular Aharonov-Bohm geometry Journal of Applied Physics, 119, 154304.

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The thermoelectric transport properties of a rectangular Aharonov-Bohm ring at low temperature are investigated using a theoretical approach based on Green's functions. The oscillations in the transmission coefficient as the field is varied can be used to tune the thermoelectric response of the ring. Large magnitude thermopowers are obtainable which, in conjunction with low conductance, can result in a high thermoelectric figure of merit. The effects of single site impurities and more general Anderson disorder are considered explicitly in the context of evaluating their effect on the Fano-type resonances in the transmission coefficient. Importantly, it is shown that even for moderate levels of disorder the thermoelectric figure of merit can remain significant, increasing the appeal of such structures from the perspective of specialist thermoelectric applications.

Item Type: Article
Subjects : subj_Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Pye, AJ
Faux, DA
Kearney, MJ
Date : 19 April 2016
DOI : 10.1063/1.4946892
Copyright Disclaimer : The following article appeared in Journal of Applied Physics 119, 154304 (2016); doi: 10.1063/1.4946892 and may be found at This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 13 Apr 2016 15:12
Last Modified : 31 Oct 2017 18:12

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