Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 64: Poster 1
MA 64.37: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-EG
Magnetic linear dichroism of 3d metal thin films — •Torsten Veltum1, Tobias Löffler1, Mathias Gehlmann2, Lukasz Plucinski2, Claus Michael Schneider2, Stephan Borek3, Jan Minár3, Jürgen Braun3, Hubert Ebert3, and Mathias Getzlaff1 — 1Institut für Angewandte Physik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf — 2Peter Grünberg Institut PGI-6, Forschungszentrum Jülich, 52428 Jülich — 3Dep. Chemie und Biochemie, Universität München, Butenandstr. 5-13, 81377 München
Magnetic linear dichroism in the angular distribution of photoelectrons (MLDAD) is a technique that allows the study of both the electronic band structure and the magnetic properties of thin films and single crystals. We study epitaxially grown Co(0001) thin films on a W(110) surface.
In this study linearly polarized synchrotron radiation (Beamline 5, DELTA Dortmund) in the VUV regime is used to gain angle-resolved photoelectron spectroscopy data. The theoretical calculations make use of dynamical mean-field theory (DMFT), including a complete calculation within the one-step model (1SM) of photoemission, using the local spin-density approximation (LSDA).
We compare the theoretical and experimental data to best fit peak positions and the asymmetry of the spectra as a function of excitation energy, using different values for the averaged on-site Coulomb interaction U.