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Polar magneto-optical Kerr effect for low-symmetric ferromagnets

Helmut Rathgen·Mikhail I. Katsnelson·Olle Eriksson·Gertrud Zwicknagl
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Abstract

The polar magneto-optical Kerr effect (MOKE) for low-symmetric ferromagnetic crystals is investigated theoretically based on first-principle calculations of optical conductivities and a transfer matrix approach for the electrodynamics part of the problem. Exact average magneto-optical properties of polycrystals are described, taking into account realistic models for the distribution of domain orientations. It is shown that for low-symmetric ferromagnetic single crystals the MOKE is determined by an interplay of crystallographic birefringence and magnetic effects. Calculations for single and bi-crystal of hcp 11-20 Co and for a polycrystal of CrO_2 are performed, with results being in good agreement with experimental data.

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Helmut Rathgen, Mikhail I. Katsnelson, Olle Eriksson, Gertrud Zwicknagl. 2005-05-25. Polar magneto-optical Kerr effect for low-symmetric ferromagnets. https://doi.org/10.1103/physrevb.72.014451

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