93 citations · 424 across the 21 of their papers we have counts for
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Spin- ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice: A bosonic approach
D. C. Carvalho, A. S. T. Pires, L. A. S. Mól
We examine the phase diagram of the spin- ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice, in which is the ferromagnetic…
Diluted planar ferromagnets: nonlinear excitations on a non-simply connected manifold
Fagner M. Paula, Afranio R. Pereira, Lucas A. S. Mól
We study the behavior of magnetic vortices on a two-dimensional support manifold being not simply connected. It is done by considering the continuum approach of the XY-model on a p…
On Phase Transition and Vortex Stability in the Generalized XY Models
L. A. S. Mól, A. R. Pereira, Winder A. Moura-Melo
We study a recent generalization proposed for the XY model in two and three dimensions. Using both, the continuum limit and discrete lattice, we obtained the vortex configuration a…
Oscillating Solitons Pinned to a Nonmagnetic Impurity in Layered Antiferromagnets
L. A. S. Mól, A. R. Pereira, W. A. Moura-Melo
We argue that an oscillatory motion of impurity-pinned solitons may occur in layered antiferromagnetic compounds. The characteristic frequencies of these modes, that may be detecte…
Vortices in the presence of a nonmagnetic atom impurity in 2D XY ferromagnets
L. A. S. Mól, A. R. Pereira, A. S. T. Pires
Using a model of nonmagnetic impurity potential, we have examined the behavior of planar vortex solutions in the classical two-dimensional XY ferromagnets in the presence of a spin…