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Spintronics for electrical measurement of light polarization
Abstract
The helicity of a circularly polarized light beam may be determined by the spin direction of photoexcited electrons in a III-V semiconductor. We present a theoretical demonstration on how the direction of the ensuing electron spin polarization may be determined by electrical means of two ferromagnet/semiconductor Schottky barriers. The proposed scheme allows for the time-resolved detection of spin accumulation in small structures and may have a device application. (c) 2006 American Institute of Physics.
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