Tricriticality and Reentrance in a Naive Spin-Glass Model

Details Tricriticality and Reentrance in a Naive Spin-Glass Model Tricriticality and Reentrance in a Naive Spin-Glass Model

2010-05-18

arxiv.org/abs/1005.3334v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

12 pages, 1 figure

Scientific paper

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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