Circularly polarized photoluminescence as a probe of the spin polarization in GaAs/AlGaAs quantum Hall bilayers - Santos, L. Fernandes dos; Pusep, Yuri A; Villegas-Lelovsky, L.; Lopez-Richard, V.; Marques, G. E.; Gusev, Guennadii Michailovich; Smirnov, D.; Bakarov, A. K. (Brazilian Workshop on Semiconductor Physics - BWSP, 2013)