Abstract
A magnetic model is considered consisting of annealed, mutually repelling ferromagnetic bond impurities in an antiferromagnetic host lattice. Using recurrence relation techniques, the grand-canonical version of this model is solved on the three-coordinated Bethe lattice. A generic phase diagram is obtained containing, apart from the usual ferro- and antiferromagnetic regimes, two distinct incommensurate phases as well as a period-four modulated phase. Evidence is obtained that in one of the two incommensurate phases impurity pairing occurs.
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Mulder, B.M., Krikos, C. & Papatriantafillou, C. Thermodynamics of a model wih interacting annealed bond impurities on the Bethe lattice. J Stat Phys 65, 423–444 (1991). https://doi.org/10.1007/BF01053737
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DOI: https://doi.org/10.1007/BF01053737