Dynamical mean field theory study of a simplified model for CuO2 planes

Following previous work on Hubbard and Anderson models, we introduce a simplified three-band Hubbard model for CuO2 planes of high-Tc superconductors. This allows for exact evaluation of single-particle Green's functions within the dynamical mean field approach. Keeping information about the lattice structure through the appropriate bare density of states, we study the existence of magnetic solutions, and their stability with respect to variations of the doping fraction, interaction parameters, and temperature. Normal-state properties of known superconducting cuprates are reproduced, and we show that the model has room for substantial enhancement of Neel temperatures