Minimal model needed for the Mott-Hubbard SrVO3 compound

We studied the electronic structure of the SrVO3 compound using an extended cluster model. The calculation is compared to the photoemission and x-ray absorption/bremsstrahlung isochromat spectra. The calculated spectral weight correctly describes the experimental features in the SrVO3 material. The results indicate that the O 2p states are essential to explain the data and must be included explicitly in any minimal model of this compound.