Abstract
Sixth-order series expansions for the free energy and the staggered susceptibility of a spin-1 Heisenberg antiferromagnet with easy-plane single-ion anisotropy on three-dimensional bipartite lattices have been calculated from the linked-cluster series expansion. We obtain accurate estimate of TN vs D phase diagram separating paramagnetic and planar antiferromagnetic phases. The critical point and critical exponent of the quantum phase transition occurring at T=0 are also determined. The results are compared with related works.
| Original language | English |
|---|---|
| Pages (from-to) | 3225-3229 |
| Number of pages | 5 |
| Journal | Physics Letters A |
| Volume | 374 |
| Issue number | 31-32 |
| DOIs | |
| State | Published - 12 07 2010 |
| Externally published | Yes |
Keywords
- Critical exponent
- Critical point
- Easy-plane single-ion anisotropy
- Heisenberg antiferromagnet
- Quantum phase transition
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