Av. Vertsimakha et Vi. Sugakov, EXCITON SCATTERING BY CONCENTRATION FLUCTUATIONS AND PROJECTION OF THE SPINS OF MAGNETIC-IMPURITIES IN QUANTUM-WELLS IN SEMIMAGNETIC SEMICONDUCTORS, Semiconductors, 31(5), 1997, pp. 537-539
Exciton scattering by fluctuations of the concentration and the orient
ation of the spins of magnetic impurities and the associated broadenin
g of excitonic bands in a quantum well with semimagnetic barriers CdMn
Te/CdTe/CdMnTe have been investigated. The relaxation time is found as
a function of the exciton energy and thickness of the well. The relax
ation time depends strongly on the magnetic field. The dependence is d
ifferent for excitons that form the sigma(+) and sigma(-) components o
f the optical transition. (C) 1997 American Institute of Physics.