Spintronics for electrical measurement of light polarization

Details Spintronics for electrical measurement of light polarization Spintronics for electrical measurement of light polarization

2005-12-29

arxiv.org/abs/cond-mat/0512712v2

J. Appl. Phys. 100, 063713 (2006).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revised version, 8 two-column pages, 5 figures; Added: a comprehensive time dependent analysis, figures 3b-3c & 5, equations 6

Scientific paper

10.1063/1.2338140

The helicity of a circularly polarized light beam may be determined by the spin direction of photo-excited electrons in a III-V semiconductor. We present a theoretical demonstration 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 time-resolved detection of spin accumulation in small structures and may have a device application.

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