Electron and hole g-factor oscillations in CdTe-based modulation-doped quantum wells

We have investigated g-factor oscillations ol electrons as well as of photoexcited holes in a quasi-two dimensional electron gas (2DEG) of CdTe/(CdMg)Te modulation-doped single quantum wells by means of photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopy. The oscillation amplitude is found to be related to Landau level numbers and filling factors as. predicted by the theory. The exchange constants A(NN), Of the g-factor enlargement have been obtained experimentally for the first time. The observed enlargement of the g factor in CdTe/(CdMnMgTe) heterostructures, where the sign of the intrinsic g fatter is reversed by rbe sp-d exchange interaction, confirms the results obtained for nonmagnetic CdTe/(CdMg)Te heterostructures.