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Institut f. Physik
FG Nanostrukturierte Materialien
Martin-Luther-Universitat
Halle-Wittenberg
Von-Danckelmann-Platz 3,
D-06120 Halle, Germany

Tel.:  +49 345 55 25321
Fax.: +49 345 55 27034

[Veröffentlichungen] [Patente] [Graduierungsarbeiten] [Berichte] [Poster]
Abstract

O. Rader, K. Fauth, C. Gould, C. Rüster, G.M. Schott, G. Schmidt, K. Brunner, L.W. Molenkamp, G. Schütz, F. Kronast, H.A. Dürr, W. Eberhardt, W. Gudat
Identification of extrinsic Mn contributions in Ga1-xMnxAs by field-dependent magnetic circular X-ray dichroism
Journal of electron spectroscopy and related phenomena 144 (2015-02-24 14:24:44), 789-792

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 nd>5nd>5 lineshape and paramagnetic Mn with distinct nd=5nd=5 lineshape. The paramagnetic Mn is assigned to interstitials with surface segregation tendency.

http://www.sciencedirect.com/science/article/pii/S0368204805000745
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