Multiplicity of ordered phases in frustrated systems obtained from hard-spin mean-field theory


Kaya H., Berker A.

PHYSICAL REVIEW E, vol.62, no.2, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 62 Issue: 2
  • Publication Date: 2000
  • Doi Number: 10.1103/physreve.62.r1469
  • Title of Journal : PHYSICAL REVIEW E

Abstract

Random quenched dilution of the triangular-lattice antiferromagnetic Ising model locally relieves frustration, leading to ordering phenomena. We have studied this system, under such dilution of one sublattice, using hard-spin mean-field theory. After a threshold dilution, two sublattices develop nonzero magnetizations of equal magnitude and opposite signs, as all three sublattices exhibit. spin-glass order. In this phase, multiple sets of ordered solutions occur. A phase diagram is obtained in dilution fraction and temperature.