Parametric quantum spin pump

Details Parametric quantum spin pump Parametric quantum spin pump

2002-11-21

arxiv.org/abs/cond-mat/0211460v1

Phys. Rev. B Vol.68, 113306 (2003)

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevB.68.113306

We investigate a non-adiabatic parametric quantum pump consists of a nonmagnetic scattering region connected by two ferromagnetic leads. The presence of ferromagnetic leads allows electrons with different spins to experience different potential landscape. Using this effect we propose a quantum spin pump that drives spin-up electrons to flow in one direction and spin-down electrons to flow in opposite direction. As a result, the spin pump can deliver a spin current with vanishing charge current.

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