Article (Scientific journals)
Stochastically driven single-level quantum dot: A nanoscale finite-time thermodynamic machine and its various operational modes
Esposito, Massimiliano; Kumar, Niraj; Lindenberg, Katja et al.
2012In Physical Review. E., 85 (3)
Peer reviewed
 

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Abstract :
[en] We describe a single-level quantum dot in contact with two leads as a nanoscale finite-time thermodynamic machine. The dot is driven by an external stochastic force that switches its energy between two values. In the isothermal regime, it can operate as a rechargeable battery by generating an electric current against the applied bias in response to the stochastic driving and then redelivering work in the reverse cycle. This behavior is reminiscent of the Parrondo paradox. If there is a thermal gradient the device can function as a work-generating thermal engine or as a refrigerator that extracts heat from the cold reservoir via the work input of the stochastic driving. The efficiency of the machine at maximum power output is investigated for each mode of operation, and universal features are identified.
Disciplines :
Physics
Author, co-author :
Esposito, Massimiliano  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Kumar, Niraj;  University of California San Diego > Department of Chemistry and Biochemistry and BioCircuits Institute
Lindenberg, Katja;  University of California, San Diego > Department of Chemistry and Biochemistry and BioCircuits Institute
Van den Broeck, Christian;  Universiteit Hasselt - UH
Language :
English
Title :
Stochastically driven single-level quantum dot: A nanoscale finite-time thermodynamic machine and its various operational modes
Publication date :
15 March 2012
Journal title :
Physical Review. E.
ISSN :
1539-3755
Volume :
85
Issue :
3
Peer reviewed :
Peer reviewed
Additional URL :
Commentary :
Times Cited: 2 Part 1 Journal Article
Available on ORBilu :
since 19 November 2013

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