High multipole transitions in NIXS: valence and hybridization in 4f systems

Abstract

Momentum-transfer (q) dependent non-resonant inelastic x-ray scattering measurements were made at the N4,5 edges for several rare earth compounds. With increasing q, giant dipole resonances diminish, to be replaced by strong multiplet lines at lower energy transfer. These multiplets result from two different orders of multipole scattering and are distinct for systems with simple 4f^0 and 4f^1 initial states. A many-body theoretical treatment of the multiplets agrees well with the experimental data on ionic La and Ce phosphate reference compounds. Comparing measurements on CeO2 and CeRh3 to the theory and the phosphates indicates sensitivity to hybridization as observed by a broadening of 4f^0-related multiplet features. We expect such strong, nondipole features to be generic for NIXS from f-electron systems.

References in corpus (3)

• First principles study of rare-earth oxides
• Inelastic Scattering from Core-electrons: a Multiple Scattering Approach
• Background Proportional Enhancement of the Extended Fine Structure in Nonresonant Inelastic X-ray Scattering

Cited by in corpus (23)

• Multiplet ligand-field theory using Wannier orbitals
• Non-resonant inelastic x-ray scattering involving excitonic excitations
• A Novel High-Pressure Monoclinic Metallic Phase of V2O3
• 5d-5f Electric-multipole Transitions in Uranium Dioxide Probed by Non-resonant Inelastic X-ray Scattering
• 4$f$ crystal field ground state of the strongly correlated topological insulator SmB${}_6$
• Probing Electronic Correlations in Actinide Materials Using Multipolar Transitions
• CeRu${}_4$Sn${}_6$: a strongly correlated material with nontrivial topology
• Determining the in-plane orientation of the ground-state orbital of CeCu2Si2
• Coexistence of Bound and Virtual-bound States in Shallow-core to Valence Spectroscopies
• Direct bulk sensitive probe of 5f symmetry in URu2Si2
• Synchrotron Radiation Techniques and their Application to Actinide Materials
• Exciton spectroscopy of hexagonal boron nitride using non-resonant x-ray Raman scattering
• The local electronic structure of alpha-Li3N
• Direct imaging of orbitals in quantum materials
• Spectroscopic evidence of Kondo-induced quasi-quartet in CeRh${}_2$As${}_2$
• Theoretical Treatments of the Bound-Free Contribution and Experimental Best Practice in X-ray Thomson Scattering from Warm Dense Matter
• U 5$f$ crystal-field ground state of UO${}_2$ probed by directional dichroism in nonresonant inelastic x-ray scattering
• Possible multi-orbital ground state in CeCu${}_2$Si${}_2$
• The quartet ground state in CeB${}_6$: an inelastic x-ray scattering study
• Singlet magnetism in intermetallic UGa${}_2$ unveiled by inelastic x-ray scattering
• Orientation of ground-state orbital in CeCoIn${}_5$ and CeRhIn${}_5$
• Selective orbital imaging of excited states with x-ray spectroscopy: the example of $\alpha$-MnS
• Multichannel active-space embedding of atomic multiplets in plane-wave DFT/PAW for core-level spectroscopies