A variational approach for the classical anisotropic Heisenberg model in a crystal field

The variational approach based on the Bogoliubov inequality for the free energy is used to study the three-dimensional anisotropic Heisenberg XXZ model with a crystal field. The magnetization and the phase diagrams are obtained as a function of the parameters of the Hamiltonian. Limiting cases, such...

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Veröffentlicht in:	Physica A 2012-02, Vol.391 (4), p.1149-1157
Hauptverfasser:	Carvalho, D.C., Castro, L.M., Plascak, J.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropic Heisenberg model Anisotropy Approximation Computer simulation Crystals Mathematical analysis Mathematical models Monte Carlo methods Phase diagram Three dimensional Variational approach
Online-Zugang:	Volltext
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