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Cluster expansion for the spin-32 Blume-Capel model

✍ Scribed by V. Ilkovič

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 305 KB
Volume: 234
Category: Article
ISSN: 0378-4371
DOI: 10.1016/s0378-4371(96)00289-0

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✦ Synopsis

The two-spin cluster approximation in the cluster expansion method is applied for the spin-~2 Blume Capel model on the simple cubic lattices. Within this framework the phase diagram and the temperature dependence of the magnetization are obtained. We have found in the ordered phase a first-order line ending at an isolated critical point in the midst of an ordered phase (coexistence of two critical phases). The results are in qualitative agreement with the results of the molecular field approximation.

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