Metallic State of the Three-band Hubbard Model with Super-lattice Structure
Strongly Correlated Electrons
2009-11-13 v1 Superconductivity
Abstract
We investigate the dynamical superlattice correlation in the two-dimensional three-band Hubbard model on the basis of the unrestricted fluctuation exchange approximation. We calculate the one-particle spectral function, the spin correlation function and the charge correlation function at finite temperature. We find that some experimental results can be reproduced consistenly by taking inhomogenous distribution of Cu 3d electrons into account. The correlation functions suggest that several kinds of instabilities with spatial inhomogenieties exist in some regions, where these instabilities significantly affect the one-particle spectral fuctions.
Keywords
Cite
@article{arxiv.0805.0989,
title = {Metallic State of the Three-band Hubbard Model with Super-lattice Structure},
author = {Shigeru Koikegami and Takashi Yanagisawa and Masaru Kato},
journal= {arXiv preprint arXiv:0805.0989},
year = {2009}
}
Comments
17 pages, 9 figures