F. A. da Costa. Tricriticality and Reentrance in a Naive Spin-glass Model
Submitted on: Jun 12, 2012, 19:32:37
Natural Sciences / Physics / Particle physics
Description: In this paper a spin-1 spin-glass model under the presence of a uniform crystal field is investigated. It is shown that the model presents both continuous and first-order phase transition separated by a tricritical point. The phase diagram is obtained within the replica-symmetric solution and exhibits reentrance phenomena at low temperatures. Possibly it is the simplest model which can describe inverse freezing phenomena.
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