Phase Transitions in Coupled XY-Ising Systems

Authors

Enzo Granato
J. M. Kosterlitz
Jooyoung Lee
M. P. Nightingale, University of Rhode IslandFollow

Document Type

Article

Date of Original Version

2-25-1991

Abstract

We study the critical behavior of fully frustrated XY and Josephson-junction systems by means of a coupled XY-Ising model. From Monte Carlo and transfer-matrix calculations, we find separate XY and Ising and first-order transitions, depending on the parameters. In addition, a line of continuous transitions is found, with simulataneous loss of XY and Ising order and novel critical behavior. This result is supported by Monte Carlo simulations of frustrated XY models on square and triangular lattices.

Citation/Publisher Attribution

Granato, E., Kosterlitz, J. M., Lee, J., & Nightingale, M. P. (1991). Phase transitions in coupled XY-Ising systems. Physical Review Letters, 66(8), 1090-1093. doi: 10.1103/PhysRevLett.66.1090

Available at: http://dx.doi.org/10.1103/PhysRevLett.66.1090

Publisher Statement

© 1991 The American Physical Society