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.

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

References in corpus (5)

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• Localization induced by spatially uncorrelated subohmic baths in one dimension
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• Mapping a dissipative quantum spin chain onto a generalized Coulomb gas
• Bosonized one-dimensional quantum systems through enhanced event-chain Monte Carlo
• Strong enhancements to superconducting properties of 1D systems from metallic reservoirs