Orbital magnetism in the half-metallic Heusler alloys
I. Galanakis
TL;DR
This paper investigates the orbital magnetism in half-metallic Heusler alloys using relativistic calculations, finding that orbital moments are negligible compared to spin moments and are influenced by spin-orbit coupling and hybridization.
Contribution
It provides a detailed theoretical analysis of orbital moments in Heusler alloys, explaining their quenching and relation to spin-orbit effects, supported by comparison with experimental data.
Findings
Orbital moments are nearly quenched in these alloys.
Orbital moments are negligible compared to spin moments.
Spin-orbit strength and hybridization explain the atomic-resolved orbital moments.
Abstract
Using the fully-relativistic screened Korringa-Kohn-Rostoker method I study the orbital magnetism in the half-metallic Heusler alloys. Orbital moments are almost completely quenched and they are negligible with respect to the spin moments. The change in the atomic-resolved orbital moments can be easily explained in terms of the spin-orbit strength and hybridization effects. Finally I discuss the orbital and spin moments derived from X-ray magnetic circular dichroism experiments.
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