Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-09-08
Physical Review B 84, 195113 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 3 figures, added references, to appear in PRB
Scientific paper
10.1103/PhysRevB.84.195113
We demonstrate the validity of the current fluctuation theorem for a double quantum dot surrounded by four terminals within the Born-, Markov- and secular approximations beyond the Coulomb-blockade regime. The electronic tunneling to two fermionic contacts conserves the total number of electrons, and the internal tunneling is phonon-assisted by two bosonic baths. Adapted choice of thermodynamic parameters between the baths may drive a current against an existing electric or thermal gradient. We study the apparent violation of the fluctuation theorem when only some of the energy and matter currents are monitored.
Brandes Tobias
Krause Thilo
Schaller Gernot
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