Phase Transitions in the Antiferromagnetic Heisenberg Model on a Body-Centered Cubic Lattice with Allowance for the Next-Nearest-Neighbor Interactions |
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Authors: | A K Murtazaev M K Ramazanov D R Kurbanova M K Badiev |
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Institution: | 1.Institute of Physics, Dagestan Science Center,Russian Academy of Sciences,Makhachkala, Dagestan Republic,Russia;2.Dagestan State University,Makhachkala, Dagestan Republic,Russia |
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Abstract: | Based on the replica exchange Monte Carlo algorithm and histogram analysis of data, the phase transitions in the three-dimensional antiferromagnetic Heisenberg model on a body-centered cubic lattice with allowance for the next-nearest-neighbor interaction are studied. The study is performed for the nextnearest- neighbor exchange interaction ratio of r = 1. It is established that, for this model, the transition from the antiferromagnetic to paramagnetic phase is a first-order phase transition. |
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