Vibronic effect on resonant inelastic x-ray scattering in cubic iridium hexahalides

Naoya Iwahara, Wataru Furukawa

In resonant inelastic x-ray scattering (RIXS) spectra of K${}_2$IrCl${}_6$, the peak for the $j=3/2$ multiplet states shows a splitting that resembles non-cubic crystal-field effect al…