Floating phase in a dissipative Josephson junction array
Statistical Mechanics
2007-05-23 v3 Superconductivity
Abstract
We consider dissipative quantum phase transitions in Josephson junction arrays and show that the disordered phase in this extended system can be viewed as an unusual floating phase in which the states of local -dimensional elements (single Josephson junctions) can slide past each other despite arbitrary range spatial couplings among them. The unusual character of the metal-superconductor quantum critical point can be tested by measurements of the current voltage characteristic. This may be the simplest and most natural example of a floating phase.
Keywords
Cite
@article{arxiv.cond-mat/0407308,
title = {Floating phase in a dissipative Josephson junction array},
author = {Sumanta Tewari and John Toner and Sudip Chakravarty},
journal= {arXiv preprint arXiv:cond-mat/0407308},
year = {2007}
}
Comments
4 pages, RevTex4. The revised version contains higher order renormalization group equations and the corresponding phase diagram