Quantum critical phenomena in ladders of Josephson junctions in a magnetic field
Condensed Matter
2016-08-31 v1 supr-con
Abstract
A model of a ladder of Josephson junctions in a magnetic field is considered. The topological features of the zero-temperature phase diagram, as a function of charging energy and small deviations from commensurability of the vortex lattice, are strongly dependent on the field. In addition to superconductor-insulator transitions, commensurate-incommensurate transitions and depinning by quantum fluctuations of the vortex-lattice are also possible. the critical behavior of the superconductor-insulator transition at f = 1/2 is found to depend on the ratio between interchain and intrachain Josephson couplings and is in the universality of the classical XY-Ising model.
Keywords
Cite
@article{arxiv.cond-mat/9503025,
title = {Quantum critical phenomena in ladders of Josephson junctions in a magnetic field},
author = {Enzo Granato},
journal= {arXiv preprint arXiv:cond-mat/9503025},
year = {2016}
}
Comments
9 pages, uuenconded postscript, Proc. 1994 Adriatico Workshop.