W. Grieshaber et al., PROFILES OF THE NORMAL AND INVERTED SEMICONDUCTOR INTERFACES - A ZEEMAN STUDY IN ASYMMETRIC CD1-YZNYTE CDTE/CD1-XMNXTE QUANTUM-WELLS/, Physical review. B, Condensed matter, 50(3), 1994, pp. 2011-2014
The normal (Cd1-xMnxTe grown on CdTe) and inverted (CdTe on Cd1-xMnxTe
) interfaces are studied separately using a quantitative model of the
Zeeman effect of excitons in asymmetric CdTe quantum wells with a magn
etic Cd1-xMnxTe barrier on one side and a nonmagnetic Cd1-yZnyTe barri
er on the opposite side. The extrinsic effect (dilution of Mn) is domi
nant at the inverted interface, while the normal interface allows a ra
ther low upper bound to the intrinsic interface effect (due to missing
nearest neighbors). Experimental results agree well with model profil
es assuming a complete Cd/Mn exchange during growth between the surfac
e layer and the subsurface layer.