Theory for disordered phase in Heisenberg and non-Heisenberg two-dimensional S=1 ferromagnets
Source abstract
Abstract
Abstract We apply a modification of self-consistent spin-wave theory to investigation of two-dimensional S =1 isotropic Heisenberg and non-Heisenberg ferromagnets at nonzero temperatures. We use Hubbard operators method and bosonization technique. We calculated chemical potential and found dependence of correlation length on temperature. Specific heat has Schottky-type peak and decreases at high temperatures. Disordered phase in non-Heisenberg ferromagnet is also studied. The results for such a model differ from those of Heisenberg one.
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Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Quantum and electron transport phenomena · Quantum many-body systems
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References (31)
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