CHARACTERIZATION OF NORMAL AND INVERTED INTERFACES BY THE ZEEMAN-EFFECT IN CD1-XMNXTE CDTE/CD1-YMGYTE QUANTUM-WELLS/

We present a study of che interface profile in asymmetric Cd1-xMnxTe/C dTe/Cd1-yMgyTe quantum wells, with normal (Cd1-xMnxTe on CdTe) and inv erted (CdTe on Cd1-xMnxTe) interfaces, The Zeeman spectra of the confi ned exciton states were determined by magnetoreflectivity and Kerr rot ation measurements. Using a segregation model and an asymmetric expone ntial profile, we interpret the Zeeman spectra of quantum wells, and d etermine the interface widths. For the same concentrations of Mn in th e barriers and the same growth conditions, the results can be coherent ly explained assuming an interface width independent of the quantum-we ll width and the type of interface (normal or inverted). [S0163-1829(9 8)04607-4].