Frustrated two-dimensional Josephson junction array near incommensurability
Abstract
To study the properties of frustrated two-dimensional Josephson junction arrays near incommensurability, we examine the current-voltage characteristics of a square proximity-coupled Josephson junction array at a sequence of frustrations f=3/8, 8/21, 0.382 , 2/5, and 5/12. Detailed scaling analyses of the current-voltage characteristics reveal approximately universal scaling behaviors for f=3/8, 8/21, 0.382, and 2/5. The approximately universal scaling behaviors and high superconducting transition temperatures indicate that both the nature of the superconducting transition and the vortex configuration near the transition at the high-order rational frustrations f=3/8, 8/21, and 0.382 are similar to those at the nearby simple frustration f=2/5. This finding suggests that the behaviors of Josephson junction arrays in the wide range of frustrations might be understood from those of a few simple rational frustrations.
Cite
@article{arxiv.cond-mat/0403573,
title = {Frustrated two-dimensional Josephson junction array near incommensurability},
author = {In-Cheol Baek and Young-Je Yun and Mu-Yong Choi},
journal= {arXiv preprint arXiv:cond-mat/0403573},
year = {2007}
}
Comments
RevTex4, 4 pages, 4 eps figures, to appear in Phys. Rev. B