Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
1 PublicationLow-temperature modeling for degenerate and frustrated Heisenberg systems with anisotropy
Kunze, T.; Gemming, S.; Numazawa, S.; Schreiber, M.
Abstract
Thermodynamic equilibration of complex systems like spin glasses or (degenerate) anisotropic spin crystals by numerical methods can be challenging due to the presence of multiple minima on the potential energy surface. This problem becomes pronounced especially at low temperature, where the system remains mainly in few states. We employ the anisotropic Heisenberg model in two dimensions to simulate and analyze the domain formation and the domain structure of multiferroic oxides. In particular, we discuss various techniques to improve the low-temperature equilibration behavior by means of a trigonal antiferromagnet with single-ion anisotropy. Furthermore, we present a localized sampling method for the Metropolis algorithm, which increases the acceptance ratio significantly.
-
Computer Physics Communications 181(2010), 806-812
DOI: 10.1016/j.cpc.2009.12.013
Cited 2 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-13001
Years: 2023 2022 2021 2020 2019 2018 2017 2016 2015