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The commensurate-disordered phase transition in 2D classical ATNNI model studied by DMRG

A. Gendiar·A. Surda
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Abstract

The classical two-dimensional anisotropic triangular nearest-neighbor Ising (ATNNI) model is studied by the density matrix renormalization group (DMRG) technique when periodic boundary conditions are imposed. Applying the finite-size scaling to the DMRG results a commensurate-disordered (C-D) phase transition line as well as temperature and magnetic critical exponents are calculated. We conclude that the (C-D) phase transition in the ATNNI model belongs to the same universality class as the ordered-disordered phase transition of the Ising model.

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A. Gendiar, A. Surda. 2000-06-28. The commensurate-disordered phase transition in 2D classical ATNNI model studied by DMRG. https://doi.org/10.1088/0305-4470%2F33%2F47%2F303

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