Dissipation-induced phase transitions in superconducting wires
Abstract
We report on the reinforcement of superconductivity in a system consisting of a narrow superconducting wire weakly coupled to a diffusive metallic film. We analyze the effective phase-only action of the system by a perturbative renormalization-group and a self-consistent variational approach to obtain the critical points and phases at T=0. We predict a quantum phase transition towards a superconducting phase with long-range order as a function of the wire stiffness and coupling to the metal. We discuss implications for the DC resistivity of the wire.
Cite
@article{arxiv.0906.5570,
title = {Dissipation-induced phase transitions in superconducting wires},
author = {Alejandro M. Lobos and Aníbal Iucci and Markus Müller and Thierry Giamarchi},
journal= {arXiv preprint arXiv:0906.5570},
year = {2010}
}
Comments
Revised version including more detailed derivations. New features: More sections, including an Appendix with derivations of analytical expressions of the cooperon propagator. New references added. 10 pages, 2 figures