Model for the x-ray photoelectron distributions ofd-band perovskites

An analytical model for the photoelectron energy distribution function for cubic $d$-band perovskites is presented, which includes the effects of differences in the $p$ and $d$ electron cross sections and plasmon excitation due to many-body interactions. The model provides a simple method for interpreting x-ray-photoemission data in terms of band structure. Excellent agreement between experiment and theory is demonstrated for both SrTi${\mathrm{O}}_3$ and ${\mathrm{Na}}_{0.8}$W${\mathrm{O}}_3$.