Spatial chemical inhomogeneity and local electronic structure of Mn-doped Ge ferromagnetic semiconductors.

J.-S. Kang,* G. Kim, S. C. Wi, S. S. Lee, S. Choi, Sunglae Cho, S. W. Han, K. H. Kim, H. J. Song, H. J. Shin, A. Sekiyama, S. Kasai, S. Suga, and B. I. Min Department of Physics, The Catholic University of Korea, Puchon 420-743, Korea Department of Physics, University of Ulsan, Ulsan 680-749, Korea Department of Physics, Gyeongsang National University, Chinju 660-701, Korea Pohang Accelerator Laboratory (PAL), POSTECH, Pohang 790-784, Korea Department of Material Physics, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan Department of Physics, POSTECH, Pohang 790-784, Korea (Received 2 September 2004; published 11 April 2005)