Study of arpes data and d-wave superconductivity using electronic models in two dimensions

Abstract We review the results of an extensive investigation of photoemission spectral weight using electronic models for the high- T c superconductors. Here we show that some recently reported unusual features of the cuprates namely the presence of (i) flat bands, (ii) antiferromagnetically induced weight, and (iii) small quasiparticle bandwidths all have a natural explanation within the context of holes moving in the presence of robust antiferromagnetic correlations. Introducing interactions among the hole carriers, a model is constructed which has d x 2 − y 2 . superconductivity, an optimal doping of ~ 15% (caused by the presence of a large density of states at the top of the valence band), and a critical temperature ~ 100 K.