Site-diluted antiferromagnet in a uniform field
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.
Year of publication: |
1988
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Authors: | Oliveira, Suzana M. ; Oliveira, P.M. ; Continentino, M.A. |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 152.1988, 3, p. 477-493
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Publisher: |
Elsevier |
Saved in:
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