Influences of DMI on spin-polarized current through a single-molecule magnet

We theoretically investigate the influences of the Dzyaloshinskii–Moriya interaction (DMI) on the spin-polarized transport through a single-molecular magnets, which is weakly coupled to ferromagnetic lead-L(pL) and nonmagnetic lead-R. The spin current is obtained by means of the rate-equation approach in the sequential-tunneling region. Due to the coherent superposition of the molecular state |1,m〉± induced by the DMI, we can observe the continuous pure spin current and negative differential conductance (NDC) under the full polarization pL=1 condition and polarization reversal of spin-current in the case of 0<pL<1. These novel phenomena may be useful in the development of molecular spintronics devices.