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Free energy and phase diagram of a triangular nonlinear lattice with a bistable substrate
| Content Provider | Scilit |
|---|---|
| Author | Vlastou-Tsinganos, G. Flytzanis, N. Buttner, H. |
| Copyright Year | 1990 |
| Description | Journal: Journal of Physics A: General Physics A model consisting of atoms on a triangular lattice, with one degree of freedom, interacting with harmonic forces up to second neighbours and with a phi$ ^{4}$ on-site potential is studied. The system's free energy is calculated using an independent site approximation and a quantum variational 'ansatz'. Phase diagrams are constructed by minimizing the free energy, using the simulated annealing Monte Carlo method. They consist of 1D and 2D stable superstructures between which discommensurations intervene. The model is relevant to one degree of freedom systems as, e.g., free to rotate molecular groups. |
| Related Links | http://iopscience.iop.org/article/10.1088/0305-4470/23/20/017/pdf |
| Ending Page | 4567 |
| Page Count | 15 |
| Starting Page | 4553 |
| ISSN | 00223689 |
| DOI | 10.1088/0305-4470/23/20/017 |
| Journal | Journal of Physics A: General Physics |
| Issue Number | 20 |
| Volume Number | 23 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1990-10-21 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics A: General Physics Condensed Matter Physics Mathematical Physics Degree of Freedom Free Energy Triangular Lattice Monte Carlo Method Simulated Annealing Phase Diagram |
| Content Type | Text |
| Resource Type | Article |
