Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 14: Electronic Structure of Surfaces: Magnetism and Spin Phenomena II
O 14.8: Vortrag
Montag, 20. März 2017, 16:45–17:00, WIL C107
Application of the Ir(100) surface as a spin-filter usingthe azimuthal characteristics of its scattering properties — •Keisuke Hatada1, Stephan Borek1, Jürgen Braun1, Jan Minar1,2, Erik Schäfer3, Hans-Joachim Elmers3, Gerd Schönhense3, and Hubert Ebert1 — 1Ludwig-Maximilians-Universität München — 2University of West Bohemia Pilsen — 3Johannes-Gutenberg-Universität Mainz
It has been shown recently that the Ir(100)
surface is a promising candidate for the
application as spin filter [1].
In our theoretical study we investigated
a semi-infinite Ir(100) system with a structural
relaxed surface.
Using the fully relativistic Korringa-Kohn-Rostoker
method we are able to characterize the scattering of
spin polarized electrons [2]. The calculations
have been done for an energy range from 6 to 15 eV,
i.e. for the energy regime of SPLEED (Spin
Polarized Low Energy Electron Diffraction).
With respect to experimental applications
the diffraction patterns have been calculated
using a polar angle of incidence of 45 deg.
Considering the azimuthal degree of freedom
we calculated so-called rotation diagrams beginning
at a high symmetry direction of the Ir surface.
The use of the azimuthal angle provides
an additional possibility to construct
spin-filter applications. In combination with
external magnetic fields the detection of
all components of the spin polarization is
possible. Results of our corresponding calculations
will be compared to experimental data.
D. Kutnyakhov et al. Ultramicroscopy 130, 63 (2013)
H. Ebert et al., The Munich SPR-KKR package, version 7.2, 2016