Abstract
Electronic structure of the diluted magnetic semiconductor Al0.9375Mn0.0625N in wurtzite phase and X-ray absorption spectrum at K edge of Mn are investigated using first principle calculations within density functional theory. From our theoretical absorption spectrum, we give a detailed interpretation of pre-edge peaks. We conclude that the valence state of Mn in (Al,Mn)N is +3. (C) 2008 Elsevier B.V. All rights reserved.