Abstract
The coupled cluster method (CCM) is applied to the spin-half XXZ model on the honeycomb lattice. Hierarchical CCM approximation schemes are applied in order to obtain the ground-state properties. The possible critical behavior of this model is also examined. Reasonably good results for the ground-state energy and the staggered magnetization are obtained, in comparison to the results from Monte Carlo simulations, spin-wave techniques, series expansions, and finite lattice diagonalizations, that have already been performed on this model.
| Original language | English |
|---|---|
| Pages (from-to) | 2371-2383 |
| Number of pages | 13 |
| Journal | International Journal of Modern Physics B |
| Volume | 12 |
| DOIs | |
| Publication status | Published - 1998 |
Keywords
- HEISENBERG-ANTIFERROMAGNET; QUANTUM