Monte Carlo simulations of an Ising bilayer with non-equivalent planes
| Autor: | Ian Jordy Lopez Diaz, N. S. Branco |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Statistics and Probability
Physics Condensed matter physics Statistical Mechanics (cond-mat.stat-mech) Bilayer Monte Carlo method FOS: Physical sciences 02 engineering and technology Parameter space 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences symbols.namesake 0103 physical sciences Dynamic Monte Carlo method symbols Antiferromagnetism Ising model Statistical physics 010306 general physics 0210 nano-technology Hamiltonian (quantum mechanics) Scaling Condensed Matter - Statistical Mechanics |
| DOI: | 10.48550/arxiv.1607.05221 |
| Popis: | We study the thermodynamic and magnetic properties of an Ising bilayer ferrimagnet. The system is composed of two interacting non-equivalent planes in which the intralayer couplings are ferromagnetic while the interlayer interactions are antiferromagnetic. Moreover, one of the planes is randomly diluted. The study is carried out within a Monte Carlo approach employing the multiple histogram reweighting method and finite-size scaling tools. The occurrence of a compensation phenomenon is verified and the compensation temperature, as well as the critical temperature for the model, are obtained as functions of the Hamiltonian parameters. We present a detailed discussion of the regions of the parameter space where the compensation effect is present or absent. Our results are then compared to a mean-field-like approximation applied to the same model by Balcerzak and Szalowski (2014). Although the Monte Carlo and mean-field results agree qualitatively, our quantitative results are significantly different. |
| Databáze: | OpenAIRE |
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