INVESTIGADORES
PASTORIZA Hernan
artículos
Título:
Phase transitions in triangular arrays of XY spins with variable coupling
Autor/es:
H. PASTORIZA; P. MARTINOLI
Revista:
Czechoslovak Journal of Physics
Editorial:
Elsevier
Referencias:
Lugar: Praga; Año: 1996 vol. 46 p. 1905 - 1905
Resumen:
We present Monte Carlo simulations in a generalized uniformly frustrated triangular-lattice model of XYspins. The frustration is varied by changing the relative strength, r/, of one of the bonds of the unit cell.We found that the ground state transforms from ferromagnetic to antiferromagnetic along the variable bonddirection for a critical value of 1/= -1/V~. Simultaneously, the phase transition toward the paramagneticstate at high temperatures changes from purely Kosterlitz-Thouless like to one of mixed character.
