Dresden 2014 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 55: Poster II
MA 55.68: Poster
Freitag, 4. April 2014, 10:30–13:30, P2
Magneto-Crystalline Anisotropy of X-Ray Magnetic Linear Dichroism in Reflection and Fluorescence at the Fe 2p1/2, 2p3/2 Edges — •Christine Jansing1, Marc Tesch1, Markus Gilbert1, Hans-Christoph Mertins1, Andreas Gaupp2,1, Dominik Legut3, Peter Oppeneer4, Daniel Bürgler5, Claus Schneider5,6, and Ulf Berges7 — 1FH Münster, Stegerwaldstr. 39, D-48565 Steinfurt — 2HZB, D-12489 Berlin — 3Nanotech. Centre, Ostrava, Czech Rep. — 4Depart. of Physics, Uppsala Uni., Uppsala, Sweden — 5FZ Jülich, PGI-6, D-52425 Jülich — 6Fak. f. Physik+CeNIDE, Uni Duisburg-Essen, D-47048 Duisburg — 7DELTA, D-44227 Dortmund
We present first experimental results on the magneto-crystalline anisotropy of X-ray magnetic linear dichroism signals detected on single crystalline bcc Fe films at the 2p edge by measurements in reflection (XMLD-R) and fluorescence (XMLD-F) using linearly polarized undulator radiation at BESSY and DELTA. First XMLD measurements at the Fe 2p edge [1] used total electron yield (TEY) detection. In contrast to TEY XMLD-R and XMLD-F spectroscopy is unaffected by the applied magnetic field and hence allows also for the investigation of buried layers. The XMLD-R and XMLD-F spectra depend on the orientation of the crystal axes, i.e. the magnetic easy and medium axes, with respect to the polarization vector of the light and show strong changes of up to 100 percent. Comparing the experimental results with our ab initio calculations allows to distinguish between competing models of the electronic band structure.
[1] F. Nolting, D. Legut, J. Rusz et al., Phys. Rev. B 82,184415(2010)