Differential spectroscopy of GaAs-Ga1-xAlxAs quantum wells : an unambiguous identifica¬tion of light-hole and heavy-hole states.
Résumé
We present differential photoluminescence and reflectivity studies of GaAs-Ga1−xAlxAs quantum wells, using both wavelength-modulation and piezomodulation techniques. Our experiments permit unambiguous identification of light- and heavy-hole exciton transitions.