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Multiplicity of Ordered Phases in Frustrated Systems Obtained from Hard-Spin Mean-Field Theory

Huseyin Kaya·A. Nihat Berker
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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 non-zero 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.

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Huseyin Kaya, A. Nihat Berker. 2000-10-12. Multiplicity of Ordered Phases in Frustrated Systems Obtained from Hard-Spin Mean-Field Theory. https://doi.org/10.1103/physreve.62.r1469

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