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5f states in UGa.sub.2./sub. probed by x-ray spectroscopies
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SYSNO ASEP 0545206 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title 5f states in UGa2 probed by x-ray spectroscopies Author(s) Kolomiets, A. V. (CZ)
Paukov, M. (CZ)
Valenta, J. (CZ)
Chatterjee, Banhi (FZU-D) ORCID
Andreev, Alexander V. (FZU-D) RID, ORCID
Kvashnina, K.O. (DE)
Wilhelm, F. (FR)
Rogalev, A. (FR)
Drozdenko, D. (CZ)
Minárik, P. (CZ)
Kolorenč, Jindřich (FZU-D) RID, ORCID, SAI
Richter, M. (DE)
Prchal, J. (CZ)
Havela, L. (CZ)Number of authors 14 Article number 045119 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 104, č. 4 (2021)Number of pages 14 s. Language eng - English Country US - United States Keywords x-ray absorption spectroscopy ; XMCD ; electronic structure ; ferromagnetism ; uranium ; density functional theory Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GA18-02344S GA ČR - Czech Science Foundation (CSF) GA21-09766S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000672770300003 EID SCOPUS 85109841601 DOI 10.1103/PhysRevB.104.045119 Annotation The ferromagnet UGa2 was investigated by x-ray absorption spectroscopy and x-ray magnetic circular dichroism (XMCD) experiments at the U–M4,5 and Ga–K edges. The position of the U–M4 white line, determined in the high-energy resolution fluorescence detection XAS, suggests that UGa2 is neither a localized 5f2 nor an itinerant system with 5f occupancy close 3. The analysis of the acquired M4,5 XANES and XMCD spectra indicates the 5f occupancy close to 2.5 and a large orbital magnetic moment of the uranium 5f states that is partly compensated by the antiparallel spin moment. Several methods based on density-functional theory were applied and the obtained results were compared with experimental observations. Only electronic structure methods taking appropriate care of orbital magnetism and related atomic multiplet effects can successfully describe all considered properties. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1103/PhysRevB.104.045119
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