Hubbard fermions band splitting at the strong intersite Coulomb interaction

Details Hubbard fermions band splitting at the strong intersite Coulomb interaction Hubbard fermions band splitting at the strong intersite Coulomb interaction

2009-11-05

arxiv.org/abs/0911.0982v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

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.

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