Loading...
Please wait, while we are loading the content...
Similar Documents
Thermal phase transitions in a honeycomb lattice gas with three-body interactions.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lohöfer, Maximilian Bonnes, Lars Wessel, Stefan |
| Copyright Year | 2013 |
| Abstract | We study the thermal phase transitions in a classical (hard-core) lattice gas model with nearest-neighbor three-body interactions on the honeycomb lattice, based on parallel tempering Monte Carlo simulations. This system realizes incompressible low-temperature phases at fractional fillings of 9/16, 5/8, and 3/4 that were identified in a previous study of a related quantum model. In particular, both the 9/16 and the 5/8 phase exhibit an extensive ground-state degeneracy reflecting the frustrated nature of the three-body interactions on the honeycomb lattice. The thermal melting of the 9/16 phase is found to be a first-order, discontinuous phase transition. On the other hand, from the thermodynamic behavior we obtain indications for a four-states Potts-model thermal transition out of the 5/8 phase. We find that this thermal Potts-model transition relates to the selection of one out of four extensive sectors within the low-energy manifold of the 5/8 phase, which we obtain via an exact mapping of the ground-state manifold to a hard-core dimer model on an embedded honeycomb superlattice. |
| Starting Page | 052135 |
| Ending Page | 052135 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://arxiv.org/pdf/1309.1034.pdf |
| PubMed reference number | 24329242v1 |
| Volume Number | 88 |
| Issue Number | 5 |
| Journal | Physical review. E, Statistical, nonlinear, and soft matter physics |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Arabic numeral 0 Embedding Exhibits as Topic Frustration Phase Transition Test scaling criticality manifold |
| Content Type | Text |
| Resource Type | Article |
