Effective Hamiltonian for a Half-filled Hubbard Chain with Alternating On-site Interactions
强关联电子
2007-05-23 v1
摘要
We derive an effective spin Hamiltonian for the one-dimensional half-filled Alternating Hubbard model in the limit of strong on-site repulsion. We show that the effective Hamiltonian is a spin Heisenberg chain with asymmetric next-nearest-neighbor (nnn) exchange.
引用
@article{arxiv.cond-mat/0405048,
title = {Effective Hamiltonian for a Half-filled Hubbard Chain with Alternating On-site Interactions},
author = {Paata Kakashvili and George I. Japaridze},
journal= {arXiv preprint arXiv:cond-mat/0405048},
year = {2007}
}
备注
8 pages, RevTeX4