4p states and X-Ray Spectroscopy

Abstract

The 4p states in transition metals and their compounds usually play minor roles on their physical quantities. Recent development of resonant x-ray scattering (RXS) at the K-edge of transition metals, however, casts light on the 4p states, because the signals on orbital and magnetic superlattice spots are brought about by the modulation in the 4p states. The 4p states are extending in solids and thereby sensitive to electronic states at neighboring sites. This characteristic determines the mechanism of RXS that the intensity on the orbital superlattice spots are mainly generated by the lattice distortion and those on magnetic superlattice spots by the coupling of the 4p states with the orbital polarization in the 3d states at neighboring sites. Taking up typical examples for orbital and magnetic RXS, we demonstrate these mechanisms on the basis of the band structure calculation. Finally, we study the MCD spectra at the K-edge, demonstrating that the same mechanism as the magnetic RXS is working.

9 pages, 9 figures, submitted to Physica Scripta (comment)

References in corpus (18)

• Triple-q octupolar ordering in NpO_2
• Direct observation of orbital ordering in La${}_{0.5}$Sr${}_{1.5}$MnO${}_4$ using soft x-ray diffraction
• Antiferro-quadrupole Ordering of CeB${}_6$ Studied by Resonant X-ray Scattering
• Resonant x-ray diffraction study of the magnetoresistant perovskite Pr0.6Ca0.4MnO3
• Electronic Structure and Phase Transition in V2O3: Importance of 3d Spin-Orbit Interaction and Lattice Distortion
• Ab initio calculation of resonant X-ray scattering in Manganites
• Orbital ordering, Jahn-Teller distortion, and resonant x-ray scattering in KCuF3
• Magnetic Ordering, Orbital Ordering and Resonant X-ray Scattering in Perovskite Titanates
• The implications of resonant x-ray scattering data on the physics of the insulating phase of V${}_2$O${}_3$
• Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6
• A Resonant X-ray Scattering Study of Octahedral Tilt Ordering in LaMnO${}_3$ and Pr${}_{1-x}$Ca${}_x$MnO${}_3$
• Band structure approach to the resonant x-ray scattering
• X-Ray Magnetic Circular Dichroism at the K edge of Mn3GaC
• Magnetic Resonant X-Ray Scattering in KCuF3
• Resonant X-Ray Scattering from CeB${}_6$
• Resonant X-Ray Scattering from URu_{2}Si_{2}
• An ab-initio calculation of magnetic resonant x-ray scattering spectra in NiO
• Relative contributions of lattice distortion and orbital ordering to resonant x-ray scattering in manganites

Cited by in corpus (1)

• 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}