Current-induced spin polarization in strained semiconductors.
نویسندگان
چکیده
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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ورودعنوان ژورنال:
- Physical review letters
دوره 93 17 شماره
صفحات -
تاریخ انتشار 2004