The spin-1/2 Heisenberg antiferromagnet on a 1/7-depleted triangular lattice: Ground-state properties
Strongly Correlated Electrons
2009-11-07 v1
Abstract
A linear spin-wave approach, a variational method and exact diagonlization are used to investigate the magnetic long-range order (LRO) of the spin-1/2 Heisenberg antiferromagnet on a two-dimensional 1/7-depleted triangular (maple leaf) lattice consisting of triangles and hexagons only. This lattice has z=5 nearest neighbors and its coordination number z is therefore between those of the triangular (z=6) and the kagome (z=4) lattices. Calculating spin-spin correlations, sublattice magnetization, spin stiffness, spin-wave velocity and spin gap we find that the classical 6-sublattice LRO is strongly renormalized by quantum fluctuations, however, remains stable also in the quantum model.
Keywords
Cite
@article{arxiv.cond-mat/0201584,
title = {The spin-1/2 Heisenberg antiferromagnet on a 1/7-depleted triangular lattice: Ground-state properties},
author = {D. Schmalfuss and P. Tomczak and J. Schulenburg and J. Richter},
journal= {arXiv preprint arXiv:cond-mat/0201584},
year = {2009}
}
Comments
24 pages, 6 figures