Influence of electron–electron scattering on spin-polarized current states in magnetically wrapped nanowires

Abstract

The role of electron–electron collisions in the formation of spin-polarized current states in a spin guide—a system consisting of a nonmagnetic conducting channel wrapped in a grounded nanoscale magnetic shell—is studied. It is shown that under certain conditions the spin guide can generate and transport nonequilibrium electron density with high spin polarization over long distances even though frequent electron–electron scattering causes drifting of the nonequilibrium electrons as a whole. Ways to convert the spin-polarized electron density into a spin-polarized electric current are proposed.