ZEEMAN STUDIES OF CDTE-CD(1-X)MN(X)TE MULTIQUANTUM WELLS

Various novel features of the magnetic field splitting associated with the photoluminescence excitation spectra (PLE) and the photoluminesce nce spectra (PL) for CdTe/Cd1-xMnxTe quantum well structures are descr ibed. The unusual Zeeman splitting pattern of the heavy-hole barrier e xciton state, together with that of the light-hole well exciton state, is shown to be consistent with the magnetic response of the monolayer s adjacent to an interface being different from that of the bulk. In p articular it is shown that for the carrier in the conduction band, the magnitude of the exchange integral with the magnetic ions in the firs t two monolayers is of approximately the same magnitude but of opposit e sign to that occurring in the bulk.