Regensburg 2016 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 8: Magnetic Surface Excitations
MA 8.6: Vortrag
Montag, 7. März 2016, 16:30–16:45, S052
The effect of surface oxidation on spin scattering for the W(110) surface — •Stephan Borek1, Jürgen Braun1, Jan Minár1,2, Dima Kutnyakhov3, Hans-Joachim Elmers3, Gerd Schönhense3, and Hubert Ebert1 — 1Ludwig-Maximilians-Universität München — 2University of West Bohemia Pilsen — 3Johannes-Gutenberg-Universität Mainz
It is well known that the W(110) surface possess interesting properties due to spin-orbit induced splitting of surface states. In our work we investigated the spin-orbit induced scattering of electrons from a clean W(110) surface using corresponding diffraction patterns to get an overview on the scattering behaviour. It was found that an oxygen passivation of the W(110) surface with a full oxygen overlayer has a huge impact on the electron diffraction. The oxidation of the W(110) surface reduces the spin-orbit asymmetry and the figure of merit whereas the reflectivity is increased. To investigate the surface electronic structure we calculated angle-resolved photoemission spectra using the fully-relativistic one-step model. Additionally, we will discuss the impact of full potential calculations on the spin-resolved diffraction patterns of spin-polarized electrons.