Ground-state properties of the S=1/2 Heisenberg antiferromagnet on a triangular lattice: a numerical study of a finite cell
- 7 October 1990
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 23 (19) , L1043-L1051
- https://doi.org/10.1088/0305-4470/23/19/005
Abstract
The authors study numerically a 21-site Marland-Betts type cell of the S=1/2 Heisenberg antiferromagnet on a triangular lattice with nearest-neighbour (NN) and next-nearest-neighbour (NNN) couplings. The emphasis is on a comparison of the classical picture of this model with its quantum properties. By considering the structure function S(k) they demonstrate that there is a close connection between the classical and the quantum ground states of the system. Contrary to a previous conjecture they find no significant enhancement of the chiral order parameter with increasing strength of the NNN coupling.Keywords
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