Oliver Rader, K. Fauth, C. Gould, C. Ruster, G. M. Schott, G. Schmidt, K. Brunner, Laurens W. Molenkamp, G. Schutz, F. Kronast, H. A. Durr, W. Eberhardt, Wolfgang Gudat
- We combine sensitivity to atomic number, chemical shifts, probing depth, and magnetic order in a field- dependent magnetic circular X-ray dichroism study at the Mn L-edge of the diluted ferromagnetic semiconductor Ga1-xMnxAs and observe different Mn constituents: ferromagnetic Mn with an n(d) > 5 lineshape and paramagnetic Mn with distinct n(d) = 5 lineshape. The paramagnetic Mn is assigned to interstitials with surface segregation tendency. (c) 2005 Elsevier B.V. All rights reserved
