Article overview

Optical orientation of Mn^2+ ions in GaAs
I. A. Akimov ; R. I. Dzhioev ; V. L. Korenev ; Yu. G. Kusrayev ; V. F. Sapega ; D. R. Yakovlev ; M. Bayer ;
Date:	7 Oct 2010
Abstract:	We report on optical orientation of Mn^2+ in bulk GaAs under application of weak longitudinal magnetic field (B <= 100 mT). The manganese spin polarization of 25% is directly evaluated using spin flip Raman scattering spectroscopy. The dynamical polarization of Mn^2+ occurs due to s-d exchange interaction with optically oriented conduction band electrons. Time-resolved photoluminescence uncovers nontrivial electron spin dynamics where the oriented Mn^2+ ions tend to stabilize the electron spin.
Source:	arXiv, 1010.1463
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