Comparison of the spin splittings between the ${\mathit{e}}_1$${\mathit{h}}_1$ and ${\mathit{e}}_2$${\mathit{h}}_2$ excitons in a ZnSe/${\mathrm{Zn}}_{0.85}$${\mathrm{Mn}}_{0.15}$Se multiple-quantum-well structure

We present a magnetoreflectivity study of a ZnSe/${\mathrm{Zn}}_{0.85}$${\mathrm{Mn}}_{0.15}$Se multiple-quantum-well structure. The spin splittings of the two confined excitons ${\mathit{e}}_1$${\mathit{h}}_1$ and ${\mathit{e}}_2$${\mathit{h}}_2$ are studied as a function of applied magnetic field. Differences in the energies and intensities between the two excitonic transitions are discussed and interpreted using a variational calculation. We show that these diluted-magnetic-semiconductor-based structures may be interesting hosts for the study of heavy-hole/light-hole band mixing, as the energies of the confinement hole states change with the application of an external magnetic field.