Exact solution of an anisotropic centered honeycomb Ising lattice: Reentrance and partial disorder
- 1 April 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 43 (10) , 8759-8762
- https://doi.org/10.1103/physrevb.43.8759
Abstract
The exact phase diagram of an anisotropic centered honeycomb Ising lattice is obtained by transforming the system into a 32-vertex model that satisfies the free-fermion condition. We show that for a range of interaction parameters, a paramagnetic reentrant phase exists on the temperature scale between two ordered phases. The high-temperature ordered phase possesses partial disorder, in agreement with theoretical conjecture.Keywords
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