Optical Spectroscopy of the Hole Spin in GaMnAs Acceptors
Lakshmi, B. · Favrot, G. · Heiman, D.
Original · EN
The spin state of holes bound to Mn acceptors in GaMnAs is investigated by optical spectroscopy. Concentrations of Mn from 10¹7 to 10¹9 cm-3 were studied as a function of magnetic field and temperature. The photoluminescence from recombination of electrons with holes bound in the Mn-acceptor complex (MAC) displays multiple spectral peaks. The circular polarization rho of these peaks increases with increasing magnetic field and saturates at rho = 1/3. This value of polarization is expected from modeling the addition of spin angular momentum and interband optical transition matrix elements.
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