Spin polarization of electrons with Rashba double-refraction
arXiv:cond-mat/0403534 · doi:10.1088/0953-8984/16/50/005
Abstract
We demonstrate how the Rashba spin-orbit coupling in semiconductor heterostructures can produce and control a spin-polarized current without ferromagnetic leads. 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 transmission and the beam spin-polarization critically depend on the incidence angle. The transmission halves when the incidence angle is greater than a limit angle and a significant spin-polarization appears. Increasing the spin-orbit coupling one can obtain the modulation of the intensity and of the spin-polarization of the output electronic current when the input current is unpolarized. Our analysis shows the possibility to realize a spin-field-effect transistor based on the propagation of only one mode with the region with spin-orbit coupling. Where the original Datta and Das device [Appl.Phys.Lett. {\bf 56}, 665 (1990)] use the spin-precession that originates from the interference between two modes with orthogonal spin.
12 pages with 7 figures
References in corpus (11)
- Spintronics: Fundamentals and applications
- Basic obstacle for electrical spin-injection from a ferromagnetic metal into a diffusive semiconductor
- Non-ballistic spin field-effect transistor
- Ballistic spin-polarized transport and Rashba spin precession in semiconductor nanowires
- Experimental Separation of Rashba and Dresselhaus Spin-Splittings in Semiconductor Quantum Wells
- Spin interference effects in ring conductors subject to Rashba coupling
- Spin polarization of electrons by non-magnetic heterostructures : basics of spin-optics
- Rashba spin-orbit interaction and shot noise for spin-polarized and entangled electrons
- Mesoscopic Stern-Gerlach device to polarize spin currents
- Pumping spin with electrical fields
- Universal Rashba Spin Precession of Two-Dimensional Electrons and Holes
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