Abstract
We establish a thermoelectric refrigerator consisting of a quantum dot with two energy levels embedded between two thermal reservoirs at different temperatures and chemical potentials. Based on stochastic master equation the steady expressions for the current and the heat flux extracted from the reservoirs are derived analytically. The cooling rate and the coefficient of performance (COP) are obtained and the optimal performance parameters are determined. The influence of the spacing of two energy levels on the performance of the refrigerator is analyzed in detail.
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