Berlin 2015 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 19: POSTER Ia

MA 19.68: Poster

Dienstag, 17. März 2015, 09:30–13:00, Poster A

Magnetic linear dichroism in angular resolved photoemission of the valence band of 3d metal thin films on W(110) — •Tobias Löffler¹, Torsten Veltum¹, Mathias Gehlmann², Sven Döring², Lukasz Plucinski², and Mathias Getzlaff¹ — ¹Institut für Angewandte Physik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf — ²Peter Grünberg Institut PGI-6, Forschungszentrum Jülich, 52428 Jülich

The technique of magnetic linear dichroism in the angular distribution (MLDAD) of photoelectrons allows the study of the electronic band structure as well as the study of magnetic properties of metallic thin films and single crystals. We are interested in a deeper understanding of the magnetic linear dichroism of ferromagnetic 3d metals. Special attention is turned to the question, which parts of the band structure are responsible for this phenomenon. In this study, linearly polarized synchrotron radiation in the VUV regime is used. The investigated system consists of epitaxially grown 3d metal thin films on a W(110) single crystal.

The exciting photon energy is varied to investigate the electronic structure of the valence band. At lower energies, existing dichroism measurements of Co(0001) on W(110) are confirmed [1] and extended to off-normal geometry. To investigate similarities, angle-resolved spectra of Co(0001) and Fe(110) on W(110) are compared.

[1] J. Bansmann et al., Surf. Sci. 454-456 (2000), 686-691