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


Kaya H., Berker A.

PHYSICAL REVIEW E, cilt.62, sa.2, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Konu: 2
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1103/physreve.62.r1469
  • Dergi Adı: PHYSICAL REVIEW E

Özet

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.