±J Ising model on Archimedean (4,82) lattices

E.E. Vogel, J.F. Valdés and W. Lebrecht

Physica A: Statistical Mechanics and its Applications, 2006, vol. 371, issue 1, 150-154

Abstract: We report results on ground state properties for a ±J Ising model defined on the Archimedean (4,82) lattice. The sublattice method is adapted to this system. By means of combinatorics and probability analysis, weight functions are obtained allowing to calculate properties such as frustrated plaquette distribution, frustration length, energy per bond, and fractional content of unfrustrated bonds; these analytic expressions are presented as functions of x (concentration of ferromagnetic bonds). On the other hand, these parameters are also calculated by an exact numerical algorithm applied to a large number of samples for increasing size N (number of spin sites) and values of x in the range [0.0,1.0]. Analytical and numerical results tend to agree, which makes these two techniques complementary to each other. Finally, comparison is made to results previously reported for other Archimedean lattices.

Keywords: Ising; Frustration; Archimedean lattices (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:371:y:2006:i:1:p:150-154

DOI: 10.1016/j.physa.2006.04.102

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