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Ground state phase diagram of a spin-2 antiferromagnet on the square lattice
| Content Provider | Semantic Scholar |
|---|---|
| Author | Niggemann, Hiltrud Klümper, Andreas Zittartz, Johannes |
| Copyright Year | 2000 |
| Abstract | Abstract:We use the vertex state model approach to construct optimum ground states for a large class of quantum spin-2 antiferromagnets on the square lattice. Optimum ground states are exact ground states of the model which minimize all local interaction operators. The ground state contains two continuous parameters and exhibits a second order phase transition from a disordered phase with exponentially decaying correlation functions to a Néel ordered phase. The behaviour is very similar to that of the corresponding ground state of a quantum spin-3/2 model on the hexagonal lattice, which has been investigated in an earlier paper. |
| Starting Page | 15 |
| Ending Page | 19 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s100510050004 |
| Volume Number | 13 |
| Alternate Webpage(s) | https://page-one.springer.com/pdf/preview/10.1007/s100510050004 |
| Alternate Webpage(s) | https://doi.org/10.1007/s100510050004 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
