G. Finkelstein et I. Barjoseph, CHARGED EXCITONS IN GAAS QUANTUM-WELLS, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 17(11-12), 1995, pp. 1239-1245
We implement optical spectroscopy to study charged excitons (trions) i
n modulation-doped GaAs/AlGaAs quantum wells. We observe for the first
time several new trions: the positively charged exciton, the light-ho
le negatively charged exciton and the triplet state of the negatively
charged exciton.