Effective quantum dimer model for trimerized kagome antiferromagnet
Strongly Correlated Electrons
2007-05-23 v1
Abstract
An effective spin-orbit Hamiltonian is derived for a spin-1/2 trimerized kagome antiferromagnet in the second-order of perturbation theory in the ratio of two coupling constants. Low-energy singlet states of the obtained model are mapped to a quantum dimer model on a triangular lattice. The quantum dimer model is dominated by dimer resonances on a few shortest loops of the triangular lattice. Characteristic energy scale for the dimer model constitutes only a small fraction of the weaker exchange coupling constant.
Keywords
Cite
@article{arxiv.cond-mat/0501460,
title = {Effective quantum dimer model for trimerized kagome antiferromagnet},
author = {M. E. Zhitomirsky},
journal= {arXiv preprint arXiv:cond-mat/0501460},
year = {2007}
}
Comments
7 pages, 3 figures