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


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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.

作者简介

A. Murtazaev

Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences; Dagestan State University

Email: ibaev77@mail.ru
俄罗斯联邦, Makhachkala, Republic of Dagestan, 367015; Makhachkala, Republic of Dagestan, 367000

Zh. Ibaev

Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences; Dagestan State University

编辑信件的主要联系方式.
Email: ibaev77@mail.ru
俄罗斯联邦, Makhachkala, Republic of Dagestan, 367015; Makhachkala, Republic of Dagestan, 367000

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