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Monte Carlo Calculations of the Density of States for a Two-Dimensional Anisotropic Ising Model with Competing Interactions

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

A two-dimensional anisotropic Ising model with competing interactions on a square lattice is investigated using the Monte Carlo approach, based on the Wang–Landau algorithm. The curves of the density-of-states distribution and the order parameter are obtained. It is shown that the density-of-states distribution jumps sharply when |J1/J| = 0.6, due to strong degeneration of the modulated state. Sharp jumps are also observed on the distributions of the order parameter when |J1/J| > 0.2, testifying to the system’s transition from a homogeneous ordered state to a modulated phase.

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Correspondence to Zh. G. Ibaev.

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Translated by I. Obrezanova

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Murtazaev, A.K., Ibaev, Z.G. Monte Carlo Calculations of the Density of States for a Two-Dimensional Anisotropic Ising Model with Competing Interactions. Bull. Russ. Acad. Sci. Phys. 83, 847–849 (2019). https://doi.org/10.3103/S1062873819070281

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  • DOI: https://doi.org/10.3103/S1062873819070281

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