5 citations · 5 across the 1 of their papers we have counts for
4 papers · 1 filter
Free energy variational approach for the classical anisotropic XY model in a crystal field
L. M. Castro, A. S. T. Pires, J. A. Plascak
A variational approach for the free energy is used to study the three-dimensional anisotropic XY model in the presence of a crystal field. The magnetization and the phase diagrams…
Percolation model for structural phase transitions in LiHIO mixed crystals
P. H. L. Martins, J. A. Plascak, M. A. Pimenta
A percolation model is proposed to explain the structural phase transitions found in LiHIO mixed crystals as a function of the concentration parameter . The perc…
Phase Diagram and Critical Behavior of the Spin-1 Baxter-Wu Model with a Crystal Field
M. L. M. Costa, J. C. Xavier, J. A. Plascak
The phase diagram and critical behavior of the spin-1 Baxter-Wu model with a crystal field in two dimensions is explored by renormalization group, conventional finite-size scaling…
Percolation on two- and three-dimensional lattices
P. H. L. Martins, J. A. Plascak
In this work we apply a highly efficient Monte Carlo algorithm recently proposed by Newman and Ziff to treat percolation problems. The site and bond percolation are studied on a nu…