Polarized Electric Current in Semiclassical Transport with Spin-Orbit Interaction

Details Polarized Electric Current in Semiclassical Transport with Spin-Orbit Interaction Polarized Electric Current in Semiclassical Transport with Spin-Orbit Interaction

2005-06-20

arxiv.org/abs/cond-mat/0506516v3

Phys. Rev. B 74, 165301 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 2 figures

Scientific paper

10.1103/PhysRevB.74.165301

Semiclassical solutions of two-dimensional Schrodinger equation with spin-orbit interaction and smooth potential are considered. In the leading order, spin polarization is in-plane and follows the evolution of the electron momentum for a given subband. Out-of-plane spin polarization appears as a quantum correction, for which an explicit expression is obtained. We demonstrate how spin-polarized currents can be achieved with the help of a barrier or quantum point contact open for transmission only in the lower subband.

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