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Influence of spin-orbit coupling on the magnetic dipole term T.sub.α./sub.
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SYSNO ASEP 0466859 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of spin-orbit coupling on the magnetic dipole term Tα Author(s) Šipr, Ondřej (FZU-D) RID, ORCID
Minár, J. (DE)
Ebert, H. (DE)Article number 144406 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 94, č. 14 (2016), 1-7Number of pages 7 s. Language eng - English Country US - United States Keywords spin-orbit coupling ; magnetism ; XMCD Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects LD15097 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000385621000008 EID SCOPUS 84992046693 DOI 10.1103/PhysRevB.94.144406 Annotation The influence of the spin-orbit coupling (SOC) on the magnetic dipole term Talpha is studied across a range of systems in order to check whether the Talpha term can be eliminated from analysis of x-ray magnetic circular dichroism spectra performed via the spin moment sum rule. Fully relativistic Korringa-Kohn-Rostoker Green’s function calculations for Co monolayers and adatoms on Cu, Pd, Ag, Pt, and Au (111) surfaces were performed to verify whether the sum over magnetic dipole terms Tx + Ty + Tz is zero and whether the angular dependence of the Talpha term goes as 3cos2theta−1. It follows that there are circumstances when the influence of the SOC on Talpha cannot be neglected even for 3d atoms where the SOC is nominally small. The crucial factor appears to be the dimensionality of the system: For 3d adatoms, the influence of SOC on Talpha can be significant whereas for monolayers it is always practically negligible. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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