Resonant X-Ray Scattering from URu_{2}Si_{2}

Abstract

Based on a localized crystal electric field model for the U^{4+} in the (5f)^2-configuration, we analyze the resonant x-ray scattering spectra around U M_{IV} and M_{V} edges in URu_{2}Si_{2}, 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.

8 pages, 5 figures, submitted to JPSJ

References in corpus (10)

• Hidden Orbital Order in $UR{u}_{2}S{i}_2$
• Antiferro-quadrupole Ordering of CeB${}_6$ Studied by Resonant X-ray Scattering
• Inflection point in the magnetic field dependence of the ordered moment of URu2Si2 observed by neutron scattering in fields up to 17 T
• 29-Si NMR and Hidden Order in URu2Si2
• Pressure-Induced Magnetism and Hidden Order in URu_2Si_2
• Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6
• Resonant X-Ray Scattering from CeB${}_6$
• The Case for Phase Separation in $UR{u}_{2}S{i}_2$
• Lattice Distortion and Resonant X-Ray Scattering in DyB2C2
• Effects of Uniaxial Stress on Antiferromagnetic Moment in the Heavy Electron Compound URu_2Si_2

Cited by in corpus (10)

• First-principles theory of magnetic multipoles in condensed matter systems
• On the Hidden Order in URu${}_2$Si${}_2$ --- Antiferro Hexadecapole Order and its Consequences
• Hidden and antiferromagnetic order as a rank-5 superspin in URu2Si2
• Direct bulk sensitive probe of 5f symmetry in URu2Si2
• A theory of the electric quadrupole contribution to resonant x-ray scattering: Application to multipole ordering phases in Ce_{1-x}La_{x}B_{6}
• Resonant x-ray scattering spectra from multipole orderings: Np M_{4,5} edges in NpO2
• On the possibility to detect multipolar order in URu${}_2$Si${}_2$ by the electric quadrupolar transition of resonant elastic X-ray scattering
• Resonant X-Ray Scattering on the M-Edge Spectra from Triple-k Structure Phase in U_{0.75}Np_{0.25}O_{2} and UO_{2}
• 4p states and X-Ray Spectroscopy
• f-electron charge densities probed using core level non-resonant inelastic x-ray scattering