Crystal-field states of UO2 probed by directional dependence of nonresonant inelastic x-ray scattering

• Verfasst von: Sundermann, Martin [VerfasserIn]
• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Titel: Crystal-field states of UO2 probed by directional dependence of nonresonant inelastic x-ray scattering
• Verf.angabe: M. Sundermann, G. van der Laan, A. Severing, L. Simonelli, G. H. Lander, M. W. Haverkort, and R. Caciuffo
• E-Jahr: 2018
• Jahr: 5 November 2018
• Umfang: 7 S.
• Fussnoten: Die Ziffer 2 im Titel ist tiefgestellt ; Gesehen am 29.04.2019
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2018
• Band/Heft Quelle: 98(2018,20) Artikel-Nummer 205108, 7 Seiten
• ISSN Quelle: 2469-9969
• DOI: doi:10.1103/PhysRevB.98.205108
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1663707170

Abstract

Nonresonant inelastic x-ray scattering (NIXS) has been performed on single crystals of UO2 to study the directional dependence of higher-order-multipole scattering from the uranium O4,5 edges (90-110 eV). By comparing the experimental results with theoretical calculations the symmetry of the ground state is confirmed directly as the crystal-field (CF) Γ5 triplet state within the J=4 manifold. The results demonstrate that the directional dichroism of the NIXS spectra is sensitive to the CF strength and establish NIXS as a tool for probing CF interactions quantitatively.