Dresden 2014 – wissenschaftliches Programm
O 16.7: Vortrag
Montag, 31. März 2014, 17:30–17:45, GER 38
SPLEED at metallic and adsorbate-covered surfaces — •Stephan Borek1, Dmytro Kutnyakhov2, Christian Langenkämper3, Christian Thiede3, Jan Minár1, Jürgen Braun1, Gerd Schönhense2, Hans Joachim Elmers2, Markus Donath3, and Hubert Ebert1 — 1Ludwig-Maximilians-Universiät München — 2Johannes-Gutenberg-Universiät Mainz — 3Westfälische-Wilhelms-Universität Münster
The development of SPLEED (Spin-Polarized Low-Energy Electron Diffraction) as a surface-sensitive method has been pushed dramatically in theory as well as in experiment during the last decades. In particular, it is a very important tool for the study of the geometry of crystal surfaces as well as the surface potential barrier. Within the development of a multichannel-vector-spin polarimeter at BESSY various sensor materials have been investigated. Starting from this we perform fully relativistic SPLEED calculations using the SPRKKR package to investigate the resulting spin-dependent reflectivity in dependence on the energy and the scattering angles (polar and azimuthal). We present SPLEED calculations for various materials (W(001), Fe(001), Fe(001) p(1x1) O) and show their characteristics in view of reflectivity, asymmetry and the figure of merit. A comparison between experiment and theory will be made. Funded by BMBF (05K13UM1, 05K13WMA).