We propose a microscopic model Hamiltonian to account for impurity doping induced insulator-superconductor transition and the coexistence of antiferromagnetism and superconductivity in the high-Tc cuprates. The crossover from non Fermi liquid to Fermi liquid regime characterized by delocalization of delocalization of d electrons at Cu sites is discussed.
@article{arxiv.cond-mat/0303155,
title = {From charge transfer type insulator to superconductor},
author = {Wei Guo and Rushan Han},
journal= {arXiv preprint arXiv:cond-mat/0303155},
year = {2009}
}