Spin polarization of electrons by non-magnetic heterostructures : basics of spin-optics

Abstract

We propose to use the lateral interface between two regions with different strengths of the spin-orbit interaction(s) to spin-polarize the electrons in gated two dimensional semiconductor heterostructures. For a beam with a non zero angle of incidence the transmitted electrons will split into two spin polarization components propagating at different angles. We analyze the refraction at such an interface and outline the basic schemes for filtration and control of the electron spin.

arXiv comment5 pages, 4 colored figures. Published in PRL

References in corpus (6)

• The Rashba Hamiltonian and electron transport
• Transport equations for a two-dimensional electron gas with spin-orbit interaction
• Filtering spin with tunnel-coupled electron wave guides
• How to make semiconductors ferromagnetic: A first course on spintronics
• Spin-splitting in GaAs 2D holes
• Spin-Orbit induced semiconductor spin guides

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