Implementation of transmission functions for an optimized three-terminal quantum dot heat engine

We consider two modifications of a recently proposed three-terminal quantum dot heat engine. First, we investigate the necessity of the thermalization assumption, namely that electrons are always thermalized by inelastic processes when traveling across the cavity where the heat is supplied. Second,...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2017-03, Vol.29 (8), p.085303-085303
Main Authors: Schiegg, Christian H, Dzierzawa, Michael, Eckern, Ulrich
Format: Article
Language:English
Subjects:
heat engine
quantum dot
thermoelectricity
transport
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Summary:We consider two modifications of a recently proposed three-terminal quantum dot heat engine. First, we investigate the necessity of the thermalization assumption, namely that electrons are always thermalized by inelastic processes when traveling across the cavity where the heat is supplied. Second, we analyze various arrangements of tunneling-coupled quantum dots in order to implement a transmission function that is superior to the Lorentzian transmission function of a single quantum dot. We show that the maximum power of the heat engine can be improved by about a factor of two, even for a small number of dots, by choosing an optimal structure.
ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/aa5140