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Spin-polarized transport through a precessing magnetic spin coupled to ferromagnetic electrodes is studied using a non-equilibrium Green’s function approach.The characteristic of conductance is obtained at zero temperature.We find that competition between spin-exchange interaction on the spin site and spin-orbit interaction in the barriers dominates the resonant behavior of conductance.In a parallel configuration,conductance peaks have identical amplitude.With the angleθincreasing,the width of resonant peaks is broadened or narrowed for different spin coherent states.In an anti-parallel case, spin-flip tunneling in the barriers will essentially enhance amplitude of the conductance peak.
Spin-polarized transport through a precessing magnetic spin coupled to ferromagnetic electrodes is studied using a non-equilibrium Green’s function approach. The characteristic of conductance is obtained at zero temperature. We find that competition between spin-exchange interaction on the spin site and spin- orbit interaction in the barriers dominates the resonant behavior of conductance. In a parallel configuration, conductance peaks have identical amplitude. Whith the angle θincreasing, the width of the resonant peaks is broadened or narrowed for different spin coherent states. an an-parallel case, spin -flip tunneling in the barriers will essentially enhance amplitude of the conductance peak.