Exact solution of an anisotropic centered honeycomb Ising lattice: Reentrance and partial disorder
Точное решение анизотропной центрированной сотовой решётки Изинга: реентерабельность и частичный беспорядок
1991-04-01
SCID: 54.1/9d78ha94
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32-vertex modelanisotropic centered honeycomb Ising latticefree-fermion conditionparamagnetic reentrant phasepartial disorder
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Abstract (AI)
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.
Key Findings
1
The anisotropic centered honeycomb Ising lattice is solved exactly by mapping it to a 32-vertex model satisfying the free-fermion condition.
2
The exact phase diagram reveals a paramagnetic reentrant phase between two ordered phases for a range of interaction parameters.
3
The high-temperature ordered phase exhibits partial disorder, confirming a previously proposed theoretical conjecture.
Research Object
Anisotropic centered honeycomb Ising lattice
Research Subject
Exact phase behavior, including the paramagnetic reentrant phase between two ordered phases and partial disorder in the high-temperature ordered phase
Publication Details
Publication Date
1991-04-01
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