Thermodynamics of an alternate σ=1 and S=32 Ising chain mapped onto an effective BEG model

E.C. Fireman, J.C. Cressoni and R.J.V. dos Santos

Physica A: Statistical Mechanics and its Applications, 2003, vol. 329, issue 1, 147-160

Abstract: A linear chain of alternate Ising spins σ=1 and S=32, with bi-linear, bi-quadratic, single-ion and Zeeman interactions is studied. It is shown that this system can be mapped onto an effective BEG model, by the use of an extended decoration transformation. Exact results are obtained for the ground-state phase diagram and thermodynamical responses such as specific heat and magnetic susceptibility are shown.

Keywords: Ising model; BEG model; Decoration transformation; Thermodynamics (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:329:y:2003:i:1:p:147-160

DOI: 10.1016/S0378-4371(03)00596-X

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