ENERGY-GAP DISPERSION IN LAYERED CUPRATES - MONOLAYER MODEL

Self-consistent solutions of the BCS equations were found for differen t values of the chemical potential. When the Fermi level epsilon(F) li es near the bottom (top) of the band, the solutions correspond to s-ty pe pairing and when epsilon(F) lies at the center of the band, the sol utions are d-type. It was shown that the interaction of the Zhang-Rice singlets via the phonon field gives an energy gap that is in agreemen t with the experimental data. (C) 1995 American Institute of Physics.