Heisenberg model in a random field: phase diagram and tricritical behavior
By using the differential operator technique and the effective field theory scheme we study the tricritical behavior of Heisenberg classical model of spin-12 in a random field. The phase diagram in the T–h plane on a square and simple cubic lattice for a cluster with two spins is obtained when the random field is bimodal distributed.
Year of publication: |
2002
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Authors: | Albuquerque, Douglas F de ; Arruda, Alberto S de |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 316.2002, 1, p. 13-18
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Publisher: |
Elsevier |
Subject: | Heisenberg model | Effective field | Random field |
Saved in:
Online Resource
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