Control of the non-stationary spin-polarized tunneling currents by applied bias changing

We analyze time evolution of the opposite spin electron occupation for the single Anderson impurity coupled to two reservoirs in the presence of applied bias voltage. We demonstrate that non-stationary spin-polarized currents are flowing in the both leads. We reveal that spin polarization and direction of the non-stationary currents in each lead can be simultaneously inverted by the sudden changing of the applied bias voltage.