1 citations · 1 across the 1 of their papers we have counts for
3 papers
cond-mat.mtrl-sci2005★ 1 cited
Extinction of BKT transition by nonmagnetic disorder in planar-symmetry spin models
G. M. Wysin, A. R. Pereira, I. A. Marques +2
The Berezinskii-Kosterlitz-Thouless (BKT) transition in two-dimensional planar rotator and XY models on a square lattice, diluted by randomly placed vacancies, is studied here usin…
cond-mat2003
Vortex behavior near a spin vacancy in 2D XY-magnets
A. R. Pereira, L. A. S. Mol, S. A. Leonel +2
The dynamical behavior of anisotropic two dimensional Heisenberg models is still a matter of controversy. The existence of a central peak at all temperatures and a rich structure o…
cond-mat2002
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…