Work

Critical behavior analysis of pure dipolar triangular lattice via equilibrium and nonequilibrium Monte Carlo simulations

Year: 2025

Type: article

Abstract: Magnetic thin films and two-dimensional (2D) arrays of magnetic nanoparticles exhibit unique physical properties that make them valuable for a wide range of technological applications. In such systems, dipolar interactions play a crucial role in determining their physical behavior. However, due to the anisotropic and long-range nature of dipolar interactions, conventional Monte Carlo (MC) methods face challenges in investigating these systems near criticality. In this study, we examine the critical behavior of a triangular lattice of XY dipoles using the optimized Tomita MC algorithm tailored for dipolar interactions. We employ two independent computational approaches to estimate the critical temperature and exponents: equilibrium MC simulations with histogram reweighting and the nonequilibrium relaxation method. Notably, both approaches demonstrate that this XY dipolar system might be in a new universality class very close to the 2D Ising universality class.

Source: Physical review. E

DOI: 10.1103/51b7-xhs4

Authors: S. Ismailzadeh, M. D. Niry

Institution: Institute for Advanced Studies in Basic Sciences

Language: English

Topic: Theoretical and Computational Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Institute for Advanced Studies in Basic Sciences

Award: G5783744416