Electronic spectrum in cuprates within p-d Hubbard model
arXiv:cond-mat/0606557 · doi:10.1016/j.physc.2007.03.410
Abstract
A microscopic theory for electronic spectrum of the CuO2 plane within an effective p-d Hubbard model is proposed. Dyson equation for the one-electron Green function in terms of the Hubbard operators is derived which is solved self-consistently for the self-energy evaluated in the noncrossing approximation. Electron scattering on spin fluctuations induced by kinematical interaction is described by a model dynamical spin susceptibility. Doping and temperature dependence of electron dispersions, spectral functions, the Fermi surface and the coupling constant are studied.
3 pages, 9 figures, submitted to M2S-HTSC-YIII Conference in Dresden, 2006