Phase Diagram of the Triangular t-J Model with Multiple Spin Exchange in the Doped-Mott Region
Strongly Correlated Electrons
2009-02-12 v2 Materials Science
Abstract
We study the triangular - model with multiple spin exchange interactions using exact diagonalization of small clusters, as a model of monolayer liquid He. A phase where the energy spectrum suggest the behaviors of spin-charge separation is realized in the doped-Mott region due to the competition between ferromagnetic two-spin and antiferromagnetic four-spin exchange interactions. This behavior gives an interpretation of the double peaked heat capacity recently observed in monolayer liquid He adsorbed on a graphite.
Keywords
Cite
@article{arxiv.0804.4329,
title = {Phase Diagram of the Triangular t-J Model with Multiple Spin Exchange in the Doped-Mott Region},
author = {Yuki Fuseya and Masao Ogata},
journal= {arXiv preprint arXiv:0804.4329},
year = {2009}
}
Comments
4 pages, 4 figures, to appear in J. Phys. Soc. Jpn. Vol. 78, No.1 (2009)