Dissipation-induced phase transitions in superconducting wires

Details Dissipation-induced phase transitions in superconducting wires Dissipation-induced phase transitions in superconducting wires

2009-06-30

arxiv.org/abs/0906.5570v2

Phys. Rev. B 80, 214515 (2009)

Physics

Condensed Matter

Superconductivity

Revised version including more detailed derivations. New features: More sections, including an Appendix with derivations of an

Scientific paper

10.1103/PhysRevB.80.214515

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.

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