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Soluble kagome Ising model in a magnetic field

W. T. Lu·F. Y. Wu
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Abstract

An Ising model on the kagome lattice with super-exchange interactions is solved exactly under the presence of a nonzero external magnetic field. The model generalizes the super-exchange model introduced by Fisher in 1960 and is analyzed in light of a free-fermion model. We deduce the critical condition and present detailed analyses of its thermodynamic and magnetic properties. The system is found to exhibit a second-order transition with logarithmic singularities at criticality.

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W. T. Lu, F. Y. Wu. 2004-10-01. Soluble kagome Ising model in a magnetic field. https://doi.org/10.1103/physreve.71.046120

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