By developing a new formalism for resonant inelastic x-ray scattering (RIXS) spectra, we are able to interpret unique features of reduced valence layered nickelates.
Significance and Impact
Cuprates and reduced valence nickelates are both superconducting. The question is whether they are related or not. Our work suggests that they indeed are.
- Our RIXS formalism is based on orbitally resolved density of states from density functional theory (DFT) and dynamical mean field theory (DMFT) calculations.
- Calculations were done for RNiO2, R4Ni3O8, R4Ni3O10, and CaCuO2 (R a rare earth) and then compared to RIXS data.
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