Abstract
Cd1-xMnxTe/MnTe multiple quantum well structures were successfully grown on a sapphire (0001) substrate by using the ionized-cluster beam technique, and their optical and magneto-optical properties were investigated. Transitions to the subband levels formed in wells were observed in the optical absorption and magneto-circular dichroism (MCD) spectra. The transition energies shifted widely toward higher energies as the well width decreased. The experimental results for subband energies agreed well with the results calculated by using the Kronig-Penney band model. The change in the MCD peak height with the well width can be explained by the Zeeman splitting of the subband levels and by the oscillator strength of transitions to the subband levels.
