Energy gap dispersion in layered cuprates. Monolayer model
Eremin M. V. , Larionov I. A.
Self-consistent solutions of the BCS equations were found for different values of the chemical potential. When the Fermi level eF lies near the bottom (top) of the band, the solutions correspond to s-type pairing and when eF lies at the center of the band, the solutions 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 agreement with the experimental data. © 1995 American Institute of Physics.