On the Neglect of Local Coulomb Interaction on Oxygens in Perovskites Described by the Multi-band $d-p$ Model

K. Rościszewski, A. M. Oleś

On the example of TiO${}_4$ layer (such as realized in Sr${}_2$TiO${}_4$) we study electronic structure of multi-band $d-p$ models describing transition metal perovskites. In agreement w…