Finite-Temperature Phase Diagram of Quasi-One-Dimensional Molecular Conductors: Quantum Monte Carlo Study
Strongly Correlated Electrons
2008-11-11 v2
Abstract
Finite-temperature phase transitions in quasi-one-dimensional quarter-filled systems are investigated by the extended Hubbard model with electron-lattice coupling. Using a quantum Monte Carlo method combined with the inter-chain mean-field approximation, we clarify competing and coexisting behaviors among charge ordering, dimer Mott, and spin-Peierls states. It is pointed out that an anharmonicity of lattice distortions plays an important role in multi-critical behaviors. The results are compared with experimental data for quasi-one-dimensional molecular conductors such as DCNQI and TMTTF compounds.
Keywords
Cite
@article{arxiv.0807.4004,
title = {Finite-Temperature Phase Diagram of Quasi-One-Dimensional Molecular Conductors: Quantum Monte Carlo Study},
author = {Yuichi Otsuka and Hitoshi Seo and Yukitoshi Motome and Takeo Kato},
journal= {arXiv preprint arXiv:0807.4004},
year = {2008}
}
Comments
Corrected typos