| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1593605 | Solid State Communications | 2011 | 4 Pages |
In this paper, spin-dependent transport through a spin diode composed of a quantum dot coupled to a normal metal and a ferromagnetic lead is studied. The current polarization and the spin accumulation are analyzed using the equations of motion method within the nonequilibrium Green’s function formalism. We present a suitable method for computing Green’s function without carrying out any self-consistent calculation. The influence of coupling strength and magnetic field on the spin current is studied and observed that this device cannot work as a spin diode under certain conditions.
► Spin-dependent transport through a magnetic quantum dot is studied by using Keldysh formalism. ► The effects of magnetic field and coupling strength are analyzed. ► We found that the response of the current polarization depends on the magnetic field. ► It is observed that increasing coupling strength affects performance of a spin diode.
