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(p(L)) 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 vertical bar 1, m >(+/-) induced by the DMI, we can observe the continuous pure spin current and negative differential conductance (NDC) under the full polarization p(L) = 1 condition and polarization reversal of spin-current in the case of 0 < p(L) < 1. These novel phenomena may be useful in the development of molecular spintronics devices. (c) 2013 Elsevier B.V. All rights reserved.