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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
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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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