Description of Resonant Inelastic X-Ray Scattering in Correlated Metals
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A powerful X-ray technique for probing the internal structure of materials can now be applied to a class of metals that is promising for superconductors and quantum computers.
Resonant inelastic X-ray scattering (RIXS) is a rapidly developing method for probing the electronic structure of materials. But the complexity of electrodynamic processes that occur during X-ray scattering in metals that have strongly interacting electrons has made it difficult to apply RIXS to them. These so-called correlated metals are of great interest because their electron interactions give rise to a wealth of interesting phenomena.
Now, a team led by researchers at Paul Scherrer Institute (PSI) in Switzerland has developed a new method for analysing the RIXS spectra of correlated metals.
They demonstrated this method, which is based on first principles, by using it to extract important information from the spectra of the correlated metal barium–iron–arsenide.
- Physical Review X 11, 031013 (2021). doi: 10.1103/physrevx.11.031013