Electronic States in Half-Filled Correlated System with Alternating Potential
Strongly Correlated Electrons
2009-10-31 v1
Abstract
The effect of an alternating potential on a one-dimensional half-filled Hubbard model with repulsive interaction has been examined by applying the renormalization group method to the bosonized Hamiltonian. The electronic state, which is determined by the competition between alternating potential and umklapp scattering, is calculated where the relevance and the irrelevance of the alternating potential leads to the band insulator and the Mott insulator respectively. The excitation gaps for charge and spin fluctuations are calculated for both states.
Cite
@article{arxiv.cond-mat/9910133,
title = {Electronic States in Half-Filled Correlated System with Alternating Potential},
author = {Masahisa Tsuchiizu and Yoshikazu Suzumura},
journal= {arXiv preprint arXiv:cond-mat/9910133},
year = {2009}
}
Comments
15 pages, 4 figures, to be published in J. Phys. Soc. Jpn. 68 (1999) No. 12