  This paper aims to investigate the spin dependent transport properties in
hybrid nanoribbons, using the non equilibrium Greens function method. The
effects of temperature gradient between the left and right leads, the
ferromagnetic exchange field, and the local external electric fields are also
included. The results show that the spin up and spin down currents are produced
and flow in opposite directions with almost equal magnitudes. This evidently
shows that the carrier transport is dominated by the thermal spin current.
Whereas the thermal electron current is almost disappeared.
