Regensburg 2019 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 51: Magnetism Poster B
MA 51.64: Poster
Donnerstag, 4. April 2019, 15:00–18:00, Poster C
Ab initio calculation of the magneto-optical Kerr effect in transition metal alloys — •Andreas Held1, Ján Minár2, and Hubert Ebert1 — 1Department Chemie, Ludwig-Maximilians-Universität München — 2New Technologies-Research Center, University of West Bohemia, Pilsen
The magneto-optical Kerr effect (MOKE) is by now a well-established tool for investigating the properties of magnetic systems. Originating from the subtle interplay between magnetic order and spin-orbit coupling, a proper theoretical description of MOKE requires an appropriate framework. We included a calculation scheme based on the work of Huhne [1] into our fully relativistic spin-polarized Korringa-Kohn-Rostoker code that allows us to investigate both ordered and substitutionally disordered systems by means of the coherent potential approximation (CPA). With our code package we have access to the full optical conductivity tensor and this way to the complex Kerr angle. We present studies on FexCo1−x and CoxPt1−x in the full concentration range of these alloys. Manipulating the strength of the spin-orbit coupling further enabled us to investigate its impact on the MOKE in these alloys.
[1] T. Huhne, H. Ebert, Phys. Rev. B 60, 12982 (1999); T. Huhne, H. Ebert, Phys. Stat. Sol. B 215, 839 (1999)