Volume 107, Number 4, August 2014
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||12 August 2014|
Quantum Nernst engines
1 Département de Physique Théorique, Université de Genève - CH-1211 Genève 4, Switzerland
2 Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) - Cantoblanco, E-28049 Madrid, Spain
3 Department of Physics and Astronomy, University of Rochester - Rochester, NY 14627, USA
4 Institute for Quantum Studies, Chapman University - Orange, CA 92866, USA
Received: 19 June 2014
Accepted: 20 July 2014
We theoretically propose Nernst engines based on quantum Hall edge states. We identify a setup that exhibits an extreme asymmetry between the off-diagonal Onsager coefficients for heat and charge transport. In terms of thermodynamic efficiency, this engine outperforms a recently proposed classical Nernst engine. A second setup using an antidot is found to be more efficient as energy filtering becomes less strong.
PACS: 73.23.-b – Electronic transport in mesoscopic systems / 85.80.-b – Thermoelectromagnetic and other devices / 05.70.Ln – Nonequilibrium and irreversible thermodynamics
© EPLA, 2014
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