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Ab-initio calculation of Kerr spectra for semi-infinite systems including multiple reflections and optical interferences

A. Vernes·L. Szunyogh·P. Weinberger
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Abstract

Based on Luttinger's formulation the complex optical conductivity tensor is calculated within the framework of the spin-polarized relativistic screened Korringa-Kohn-Rostoker method for layered systems by means of a contour integration technique. For polar geometry and normal incidence ab-initio Kerr spectra of multilayer systems are then obtained by including via a 2x2 matrix technique all multiple reflections between layers and optical interferences in the layers. Applications to Co|Pt5 and Pt3|Co|Pt5 on the top of a semi-infinite fcc-Pt(111) bulk substrate show good qualitative agreement with the experimental spectra, but differ from those obtained by applying the commonly used two-media approach.

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A. Vernes, L. Szunyogh, P. Weinberger. 2002-01-22. Ab-initio calculation of Kerr spectra for semi-infinite systems including multiple reflections and optical interferences. https://doi.org/10.1103/physrevb.65.144448

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