Monte Carlo simulations of the equilibrium and non-equilibrium properties of low-dimensional magnetic systems with long-range dipolar interactions |
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| Affiliation: | 1. Henri-Poincaré Chair of Complex Systems, Physics Faculty, University of Havana, La Habana, CP 10400, Cuba;2. Physics Department, Electric Faculty, CUJAE, La Habana, Cuba;1. Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo, 5790, Maringá, Paraná 87020-900, Brazil;2. Departamento de Informática, Universidade Estadual de Maringá, Avenida Colombo, 5790, Maringá, Paraná 87020-900, Brazil;1. Departamento de Física, Universidade Federal do Rio Grande do Sul, CP 15051, 91501-970, Porto Alegre, RS, Brazil;2. National Institute of Science and Technology for Complex Systems, CP 15051, 91501-970, Porto Alegre, RS, Brazil;1. Magnetic Resonance Research Center, Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK;2. Department of Physics, University of California, Berkeley, CA 94720, USA;3. College of Chemistry, University of California, Berkeley, CA 94720, USA;4. Helmholtz Institut Mainz, Johannes Gutenberg University, Mainz 55099, Germany;1. Key Laboratory of Terahertz Solid-State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China;2. Department of Physics, JiangSu University, ZhenJiang 212013, China;3. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;4. School of Engineering Physics, University of Wollongong, New South Wales 2552, Australia;5. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China;1. School of Physics and Astronomy, Monash University, Victoria 3800, Australia;2. Max Planck Institut fũr Festkőrperfysik, Stuttgart, Germany;3. Max Planck Society Outstation at the FRM II, Garching, Germany;4. Institut Laue-Langevin, Rue Jules Horowitz, BP156, 38042 Grenoble, France |
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| Abstract: | The equilibrium and non-equilibrium properties of a two-dimensional Ising-like spin system with both ferromagnetic exchange and long-range dipolar interactions are studied. Implementing the Ewald Sums (ES) for the calculation of the dipolar interaction we reproduced the results of the literature concerning the equilibrium-phase diagram and the stability of the phases. We also investigated the aging regime and the Fluctuation–Dissipation Theorem (FDT) violations in the system and we showed that, despite usual claims in the literature, the dynamical behavior of the system is independent of the strength of the dipolar interaction, at least in the zone of the phase diagram under study. |
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