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Heisenberg model in a random field: phase diagram and tricritical behavior

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  • de Albuquerque, Douglas F
  • de Arruda, Alberto S

Abstract

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.

Suggested Citation

  • de Albuquerque, Douglas F & de Arruda, Alberto S, 2002. "Heisenberg model in a random field: phase diagram and tricritical behavior," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 316(1), pages 13-18.
    • Handle: RePEc:eee:phsmap:v:316:y:2002:i:1:p:13-18
    DOI: 10.1016/S0378-4371(02)01204-9
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    Cited by:

    1. Santos-Filho, A. & Albuquerque, D.F. de & Santos-Filho, J.B. & Batista, T.S. Araujo, 2016. "Phase diagram of the classical Heisenberg model in a trimodal random field distribution," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 461(C), pages 133-139.

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