EFFECTIVE INTERBAND G-FACTOR IN DILUTED MAGNETIC SEMICONDUCTOR CD1-XFEXTE

The effective interband g factors gamma(Gamma) and gamma(L) at the Gam ma and L points of the Brillouin zone for Cd1-xFexTe with x = 0.01 and 0.04 have been determined in the temperature range of 70-300 K from F araday rotation measurements. The results show that the dominant contr ibution to gamma(Gamma) is due to the sp-d exchange interaction betwee n Fe2+ ions and free carriers, while the intrinsic contribution is dom inant for gamma(L). The exchange interaction integral N-0(beta - alpha ) at the Gamma point has also been obtained. (C) 1996 American Institu te of Physics.