Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 58: Transport: Poster Session
TT 58.7: Poster
Mittwoch, 9. März 2016, 15:00–18:30, Poster D
Interaction effects in a nanoscale heat engine — •Christian Schiegg1, Michael Dzierzawa1, Ulrich Eckern1, and Karol Izydor Wysokinski2 — 1Institut für Physik, Universität Augsburg, Augsburg, Germany — 2Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
We consider the three-terminal heat engine based on resonant tunneling through quantum dots that has been proposed by Jordan et al. [1] as an efficient energy harvester. The setup consists of a central heat reservoir coupled to a left and a right lead via resonant tunneling through tunable quantum dots that act as energy filters. Interaction effects on the performance of this heat engine have been taken into account by an effective potential that arises from the screened Coulomb interaction in the non-linear transport regime [2]. Here, we include a short-range repulsion between the leads and the quantum dots within a self-consistent Hartree-Fock approximation for the non-equilibrium steady state. The efficiency and the maximum power of the heat engine are calculated and compared with the non-interacting system and with the results obtained in [2].
A.N. Jordan, B. Sothmann, R. Sanchez, and M. Büttiker,
PRB 87, 07513 (2013).
B. Szukiewicz, U. Eckern, and K. I. Wysokinski, unpublished (2015).