Current-voltage characteristics of the two-dimensional XY model with Monte Carlo dynamics

Details Current-voltage characteristics of the two-dimensional XY model with Monte Carlo dynamics Current-voltage characteristics of the two-dimensional XY model with Monte Carlo dynamics

2000-10-07

arxiv.org/abs/cond-mat/0010121v1

Phys. Rev. B 63, 024503 (2001)

Physics

Condensed Matter

Superconductivity

5 pages in two columns including 5 figures, to appear in PRB

Scientific paper

10.1103/PhysRevB.63.024503

Current-voltage characteristics and the linear resistance of the two-dimensional XY model with and without external uniform current driving are studied by Monte Carlo simulations. We apply the standard finite-size scaling analysis to get the dynamic critical exponent $z$ at various temperatures. From the comparison with the resistively-shunted junction dynamics, it is concluded that $z$ is universal in the sense that it does not depend on details of dynamics. This comparison also leads to the quantification of the time in the Monte Carlo dynamic simulation.

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