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Spin polarization of electrons with Rashba double-refraction

Ramaglia, V. ; Bercioux, D. ; Cataudella, V. ; Filippis, G. ; Perroni, C.

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We demonstrate how the Rashba spin�orbit coupling in semiconductor heterostructures can produce and control a spin-polarized current without ferromagnetic leads. The key idea is to use spin-double refraction of an electronic beam with a nonzero incidence angle. A region where the spin�orbit coupling is present separates the source and the drain without spin�orbit coupling. We show how the ...


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