Spin-bias-induced thermal rectification in a quantum dot structure

The thermal transport properties of a quantum dot structure with spin bias in the leads are investigated. We find that the spin bias can induce the thermal rectification phenomenon, and it becomes more apparent in the presence of Coulomb interaction. Accordingly, such a structure can be viewed as a candidate of thermal rectifier. In view of the thermal rectification results, we also consider that the spin bias in a quantum dot structure can be detected with the thermal method.