- Open Access
Density functional theory of resonant inelastic x-ray scattering in the quasi-one-dimensional dimer iridate
Phys. Rev. Materials 9, 104415 – Published 30 October, 2025
DOI: https://doi.org/10.1103/mhbg-g51d
Abstract
We have investigated the electronic structure of within the density-functional theory using the generalized gradient approximation while considering strong Coulomb correlations () in the framework of the fully relativistic spin-polarized Dirac linear muffin-tin orbital band-structure method. We have studied resonant inelastic x-ray scattering (RIXS) spectra of at the Ir edge for the monoclinic and hexagonal crystal structures. The calculated results are in good agreement with experimental data. The RIXS spectrum at the Ir edge possesses several sharp features below 2 eV, corresponding to transitions within the Ir levels. The excitation located from 2 to 5 eV is due to transitions. The wide structure situated at appears due to charge transfer transitions. The influence of the momentum transfer vector and incident photon energy on the Ir RIXS spectrum has been investigated. Also, we have calculated the RIXS spectra of at the Ir , and edges to study the influence of core states on the resulting Ir RIXS spectra. The theoretical RIXS spectrum at the oxygen edge has also been analyzed.
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