Effective interband g factors in diluted magnetic semiconductor Cd1−xFexTe

The effective interband g factors γΓ and γL at the Γ 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 Faraday rotation measurements. The results show that the dominant contribution to γΓ is due to the sp–d exchange interaction between Fe2+ ions and free carriers, while the intrinsic contribution is dominant for γL. The exchange interaction integral N0(β−α) at the Γ point has also been obtained.