Dimerization in a half-filled one-dimensional extended Hubbard model
强关联电子
2007-05-23 v1
摘要
We use a density matrix renormalization group method to study quantitatively the phase diagram of a one-dimensional extended Hubbard model at half-filling by investigating the correlation functions and structure factors. We confirm the existence of a novel narrow region with long-rang bond-order-wave order which is highly controversial recently between the charge-density-wave phase and Mott insulator phase. We determined accurately the position of the tricritical point , which is quite different from previous studies.
引用
@article{arxiv.cond-mat/0401494,
title = {Dimerization in a half-filled one-dimensional extended Hubbard model},
author = {Y. Z. Zhang},
journal= {arXiv preprint arXiv:cond-mat/0401494},
year = {2007}
}