Heat current rectification in a single quantum dot system with the presence and absence of the magnetic field

In this paper, heat current through a single-level quantum dot between two non-magnetic leads has been studied. The system is in non-equilibrium caused by different temperatures at leads. The Anderson model is used to model quantum dot with a single spin-degenerated level. The equations of the energy levels and their occupation of the quantum dot are solved self-consistently; then the heat current is calculated as a function of temperature difference with the effect of the magnetic field. According to my study, four parameters must be tuned to realize heat current rectification. These parameters are: the magnetic field, the Coulomb correlation, the coupling with the leads, and the lower level with the spin $$\sigma $$ is blocked, while the upper one with spin $$\sigma $$ must be opened.