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Current induced electron spin polarization in strained semiconductors

Y. Kato·R. C. Myers·A. C. Gossard·D. D. Awschalom
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Abstract

The polarization of conduction electron spins due to an electrical current is observed in strained nonmagnetic semiconductors using static and time-resolved Faraday rotation. The density, lifetime, and orientation rate of the electrically-polarized spins are characterized by a combination of optical and electrical methods. In addition, the dynamics of the current-induced spins are investigated by utilizing electrical pulses generated from a photoconductive switch. These results demonstrate the possibility of a spin source for semiconductor spintronic devices without the use of magnetic materials.

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Y. Kato, R. C. Myers, A. C. Gossard, D. D. Awschalom. 2004-03-16. Current induced electron spin polarization in strained semiconductors. https://doi.org/10.1103/physrevlett.93.176601

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