Valence-bond crystal in a {111} slice of the pyrochlore antiferromagnet
Strongly Correlated Electrons
2007-05-23 v2
Abstract
We investigate theoretically the ordering effect of quantum spin fluctuations in a Heisenberg antiferromagnet on a two-dimensional network of corner sharing tetrahedra. This network is obtained as a {111} slice of the highly frustrated pyrochlore lattice, from which it inherits the equivalence of all three pairs of opposite bonds of each tetrahedron. The lowest-order (in 1/S) quantum corrections partially lift the huge degeneracy of the classical ground state and select an ensemble of states with long-range valence-bond order.
Keywords
Cite
@article{arxiv.cond-mat/0312141,
title = {Valence-bond crystal in a {111} slice of the pyrochlore antiferromagnet},
author = {Oleg Tchernyshyov and Hong Yao and R. Moessner},
journal= {arXiv preprint arXiv:cond-mat/0312141},
year = {2007}
}
Comments
4 pages, 2 EPS figures. Minor revision: clarifications in response to referee comments, additional references