Thermal Rectification Effect of an Interacting Quantum Dot |
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| Authors: | CHEN Xue-Ou DONG Bing LEI Xiao-Lin |
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| Affiliation: | Department of Physics, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai 200030 |
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| Abstract: | We investigate the nonlinear thermal transport properties of a single interacting quantum dot with two energy levels tunnel-coupled to two electrodes using nonequilibrium Green function method and Hartree--Fock decoupling approximation. In the case of asymmetric tunnel-couplings to two electrodes, for example, when the upper level of the quantum dot is open for transport, whereas the lower level is blocked, our calculations predict a strong asymmetry for the heat (energy) current, which shows that the quantum dot system may act as a thermal rectifier in this specific situation. |
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| Keywords: | 74 25 Fy 72 10 Bg 73 63 Kv 73 23 Hk |
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