Results of Monte Carlo simulations of the ferromagnetic classical XXZ model on a square lattice are reported for interactions of the out of plane spin components lambda varying between 0 and 0.99. For all the values of lambda the signature of a Berezinskii-Kosterlitz-Thouless (BKT) phase transition was observed, and the corresponding critical temperature was located both by BKT fits and finite-size scaling methods. Data for in-plane and out of plane susceptibility, correlation length, specific heat, and internal energy are given in abroad range of temperature and for lattice sizes ranging from 32 x 32 to 256 x 256.
2-DIMENSIONAL XXZ MODEL ON A SQUARE LATTICE - A MONTE-CARLO SIMULATION / A. CUCCOLI; V. TOGNETTI; R. VAIA. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - STAMPA. - 52:(1995), pp. 10221-10231. [10.1103/PhysRevB.52.10221]
2-DIMENSIONAL XXZ MODEL ON A SQUARE LATTICE - A MONTE-CARLO SIMULATION
CUCCOLI, ALESSANDRO;TOGNETTI, VALERIO;
1995
Abstract
Results of Monte Carlo simulations of the ferromagnetic classical XXZ model on a square lattice are reported for interactions of the out of plane spin components lambda varying between 0 and 0.99. For all the values of lambda the signature of a Berezinskii-Kosterlitz-Thouless (BKT) phase transition was observed, and the corresponding critical temperature was located both by BKT fits and finite-size scaling methods. Data for in-plane and out of plane susceptibility, correlation length, specific heat, and internal energy are given in abroad range of temperature and for lattice sizes ranging from 32 x 32 to 256 x 256.File | Dimensione | Formato | |
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