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Название: Incommensurate-Commensurate Phase Transitions in an Anisotropic Antiferromagnetic Model on Triangular Lattice
Автор: Surda A.
An anisotropic antiferromagnetic model on a triangular lattice with competing interactions is investigated by the cluster transfer-matrix method. A phase diagram with ferrimagnetic, incommensurate, and disordered phases is found. Three order parameters are introduced. At commensurate-incommensurate and incommensurate-disorder phase transition lines two of them change in continuous and one in discontinuous way.