Berlin 2015 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 108: Spin-Dependent Transport Phenomena II (organized by MA)
TT 108.2: Vortrag
Donnerstag, 19. März 2015, 15:15–15:30, H 0112
Description of magneto-optics of disordered alloys from first principles — •Kristina Chadova1, Rudolf Sykora2, Dominik Legut2, Diemo Ködderitzsch1, Hubert Ebert1, and Jan Minár1,3 — 1Department of Chemistry, Physical Chemistry, Ludwig-Maximilians University Munich, Germany — 2Nanotechnology Centre VSB - Technical University of Ostrava, 17. Listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic — 3NewTechnologies-Research Center, University of West Bohemia, Pilsen, Czech Republic
The optical properties of pure - as well as disordered - alloys have received a lot of interest as they play an important role, for example in storage applications. We present a first-principle approach to calculate magneto-optical properties based on the Kubo formula implemented within the fully relativistic KKR (Korringa-Kohn-Rostoker) formalism in combination with coherent potential approximation accounting for chemical disorder in substitutional random alloys. The implemented formalism allows to calculate the full frequency dependent conductivity tensor and to discuss on this basis the magneto-optical effects. The first results will be presented for ferromagnetic transition metal alloys.