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Site-diluted antiferromagnet in a uniform field

Author

Listed:
  • Oliveira, Suzana M.
  • Oliveira, P.M.
  • Continentino, M.A.

Abstract

We study a site-diluted Ising antiferromagnet in a square lattice, in an external uniform field (DAFF). We use a real space renormalization group technique to obtain the phase diagram as a function of temperature (T), concentration of magnetic ions (p) and magnetic field (H). At zero temperature the phase diagram, in the H × T plane, has a steplike structure separating the disordered from the ordered antiferromagnetic phase. We also discuss the connection between this problem and that of a ferromagnet in a random field.

Suggested Citation

  • Oliveira, Suzana M. & Oliveira, P.M. & Continentino, M.A., 1988. "Site-diluted antiferromagnet in a uniform field," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 152(3), pages 477-493.
  • Handle: RePEc:eee:phsmap:v:152:y:1988:i:3:p:477-493
    DOI: 10.1016/0378-4371(88)90202-6
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    References listed on IDEAS

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    1. Licia Valladares & Estela dos Santos Abreu, 1985. "Les couches moyennes, le pouvoir local et la ville. Le cas de Rio de Janeiro," Revue Tiers Monde, Programme National Persée, vol. 26(101), pages 143-153.
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