Hubbard fermions band splitting at the strong intersite Coulomb interaction
Strongly Correlated Electrons
2009-11-06 v1
Abstract
The effect of the strong intersite Coulomb correlations on the formation of the electron structure of the t-V-model has been studied. A qualitatively new result has been obtained which consists in the occurrence of a split-off band of the Fermi states. The spectral intensity of this band increases with the enhancement of a doping level and is determined by the mean-square fluctuation of the occupation numbers. This leads to the qualitative change in the structure of the electron density of states.
Keywords
Cite
@article{arxiv.0911.0982,
title = {Hubbard fermions band splitting at the strong intersite Coulomb interaction},
author = {Valery V. Val'kov and Maxim M. Korovushkin},
journal= {arXiv preprint arXiv:0911.0982},
year = {2009}
}