2004/09/29 by Tatsuya Nagao, Jun-ichi Igarashi · 14 citations
Earth and Planetary Sciences · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Coulomb #Electron #High-pressure geophysics and materials #Optics #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Scattering #Spectral line #cond-mat.str-el
paper · pdf · doi:10.1143/jpsj.74.765
published in Journal of the Physical Society of Japan 74(2), 765-772 (Physical Society of Japan) · 8 pages, 5 figures, submitted to JPSJ
arxiv created 2004/09/29 · openalex publication_date 2005/02/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Based on a localized crystal electric field model for the U4+ in the (5f)2-configuration, we analyze the resonant x-ray scattering spectra around U MIV and MV edges in URu2Si2, taking full Coulomb and spin-orbit interactions into account. We consider two level schemes, a singlet model of Santini and Amoretti and a doublet model of Ohkawa and Shimizu, and assume the antiferroquadrupolar order and the antiferromagnetic order as candidates for the ambient pressure phase and the high pressure phase. It is found that the spectral shapes as a function of photon energy are independent of the assumed level scheme, but are quite different between the antiferroquadrupole and antiferromagnetic phases, This may be useful to determine the character of the ordered phase.