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Phase diagram of a mixed spin transverse Ising model with random fields

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
173
Identifiers
DOI: 10.1016/0375-9601(93)90254-w

Abstract

Abstract The mixed spin- S 1 and spin- S 2 transverse Ising system with random fields has been studied in the pair approximation, and an analytical expression for the second-order phase transition is derived for all symmetric probability distributions of random fields. Phase diagrams are obtained, and the possibilities of the existence of a tricritical point are examined.

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