4 papers
Possibility of a new universality class: The anisotropic Heisenberg model with dipolar interactions
L. A. S. Mól, B. V. Costa
This paper has been withdrawn by the authors due to a possible inconsistency in the program code.
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…
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…
Monte Carlo study of the critical temperature for the planar rotator model with nonmagnetic impurities
S. A. Leonel, Pablo Zimmermann Coura, A. R. Pereira +2
We performed Monte Carlo simulations to calculate the Berezinskii-Kosterlitz-Thouless (BKT) temperature for the two-dimensional planar rotator model in the presence of no…