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arxiv: cond-mat/0102336 · v1 · submitted 2001-02-19 · ❄️ cond-mat.stat-mech

Phase diagram of a random-anisotropy mixed-spin Ising model

classification ❄️ cond-mat.stat-mech
keywords diagramisingphasespin-1amountanisotropyappearbethe--peierls
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We investigate the phase diagram of a mixed spin-1/2--spin-1 Ising system in the presence of quenched disordered anisotropy. We carry out a mean-field and a standard self-consistent Bethe--Peierls calculation. Depending on the amount of disorder, there appear novel transition lines and multicritical points. Also, we report some connections with a percolation problem and an exact result in one dimension.

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