Depth dependence of the Mn valence and Mn-Mn coupling in (Ga,Mn)N
A. A. Freeman, K. W. Edmonds, N. R. S. Farley, S. V. Novikov, R. P. Campion, C. T. Foxon, B. L. Gallagher, E. Sarigiannidou, and G. van der Laan
Phys. Rev. B 76, 081201(R) (2007) - Published 13 August, 2007