Theoretical study of the magnetic x-ray dichroism of Os, Ir, Pt, and Au impurities in Fe

H. Ebert and R. Zeller
Phys. Rev. B 42, 2744 – Published 15 August 1990
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Abstract

The electronic structure of the 5d impurities Os, Ir, Pt, and Au in ferromagnetic Fe has been studied by the spin-polarized, relativistic version of the Korringa-Kohn-Rostoker Green’s-function method. This approach simultaneously treats spin polarization and spin-orbit coupling and naturally allows for a theoretical investigation of effects arising from an interplay of both. Here the polarization dependence of x-ray absorption (magnetic x-ray dichroism) is considered. For all the impurities studied, the agreement with recent experimental L2 and L3 absorption spectra is very satisfactory. For Pt in Fe, a decomposition of the spectra into various absorption channels is presented and the applicability of a simplified model is discussed that interprets the spectra in terms of a spin-polarized band structure alone.

  • Received 26 February 1990

DOI:https://doi.org/10.1103/PhysRevB.42.2744

©1990 American Physical Society

Authors & Affiliations

H. Ebert

  • Research Laboratories (ZFE-ME-TPH11), Siemens A.G., Postfach 3220, D-8520 Erlangen, Federal Republic of Germany

R. Zeller

  • Institut für Festkörperforschung, Forschungszentrum Jülich, Postfach 1913, D-5170 Jülich, Federal Republic of Germany

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Issue

Vol. 42, Iss. 5 — 15 August 1990

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