| Issue |
Europhys. Lett.
Volume 75, Number 4, August 2006
|
|
|---|---|---|
| Page(s) | 597 - 603 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2006-10151-4 | |
| Published online | 12 July 2006 | |
Spin lifetimes and strain-controlled spin precession of drifting electrons in 
1
Institut für Technische Physik I, Universität Erlangen-Nürnberg - Erlangen, Germany
2
Max-Planck-Research-Group for Optics, Information and Photonics Universität Erlangen-Nürnberg - Erlangen, Germany
Received:
13
April
2006
Accepted:
26
June
2006
We study the transport of spin-polarized electrons in n-GaAs using spatially resolved continuous-wave Faraday rotation. From the measured steady-state distribution, we determine spin relaxation times under drift conditions and, in the presence of strain, the induced spin splitting from the observed spin precession. Controlled variation of strain along [110] allows us to deduce the deformation potential causing this effect, while strain along [100] has no effect. The electric-field dependence of the spin lifetime is explained quantitatively in terms of an increase of the electron temperature.
PACS: 71.70.Fk – Electronic structure of bulk materials: Strain-induced splitting / 72.25.Dc – Electronic transport in condensed matter: Spin polarized transport in semiconductors / 72.25.Rb – Electronic transport in condensed matter: Spin relaxation and scattering
© EDP Sciences, 2006
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