In the present work the multiband p-d model for CuO2-layer is treated. It was shown that for the realistic set of parameters besides Zhang-Rice two-particle singlet there is non-negligible contribution of two-particle triplet state to the top of the valence band. Also shown, that to gain quantitative agreement with experimental data the minimal approximation should include the spin fluctuations beyond the Hubbard-I scheme. Quasiparticle spectrum, obtained in this approximation, is in fairly good agreement with ARPES data on Bi2212 High-Tc compound.
@article{arxiv.cond-mat/0304147,
title = {Spin fluctuations influence on quasiparticle spectrum of realistic p-d model},
author = {Maxim M. Korshunov and Sergei G. Ovchinnikov and Alexei V. Sherman},
journal= {arXiv preprint arXiv:cond-mat/0304147},
year = {2009}
}
Comments
Submitted to ICM 2003 Conference 3 pages, 2 figures