Phys. Rev. Lett. 74, 3253–3256 (1995)Superconductivity in Bad MetalsReceived 28 September 1994; published in the issue dated 17 April 1995 We introduce a model of the superconducting transition in a bad metal, and show that quantum and classical phase fluctuations prevent long-range order unless the resistivity ρ(T) falls below a critical value. Application of these ideas to high temperature superconductors accounts for the variation of ρ(Tc) in radiation-damaged films; gives an upper bound on Tc∝ns, where ns is the zero-temperature superfluid density; and shows that, with screening, phase fluctuations give a linear temperature dependence of ns at low temperatures. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.3253
DOI:
10.1103/PhysRevLett.74.3253
PACS:
74.20.Mn
See AlsoComment: Guy Deutscher, Comment on “Superconductivity in Bad Metals”, Phys. Rev. Lett. 76, 1555 (1996). |
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