Le Journal de Physique IV 03 (1993) C5-425-C5-428
Optical study of a ZnSe/Zn0.73Mn0.27Se heterostructureT LEBIHEN1, E. DELEPORTE1, M. VOOS1, S. GUHA2 and H. MUNEKATA3
1 Laboratoire de Physique de la Matière Condensée de l'Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France
2 3M Company, 3M Center, St Paul, MN 55144-100, U.S.A.
3 IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heigths, New York 10598, U.S.A.
Photoluminescence, excitation spectroscopy and magneto-photoluminescence experiments are performed up to 5.5T at low temperature (1.7K) in a ZnSe/Zn0.73Mn0.27Se double quantum well. The experimental results are compared with calculations of the excitonic transitions, available for a type-I and a type-II band structure. These calculations include the strain effects, the giant Zeeman effect in the (Zn,Mn)Se layers under a magnetic field, the diamagnetic shift of the exciton. We determine the strain state of the heterostructure and find a quite unusual configuration of the band structure : the fundamental optical transitions of the two wells are type-I light hole transitions, while the excited optical transitions are type-II heavy hole transitions.
© EDP Sciences 1993