Superconductivity in bad metals

Journal Article · Mon Apr 17 00:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.74.3253· OSTI ID:44877

Emery, V J ^[1]; Kivelson, S A ^[2]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Department of Physics, University of California at Los Angeles, Los Angeles, California 90095 (United States)

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 {rho}({ital T}) falls below a critical value. Application of these ideas to high temperature superconductors accounts for the variation of {rho}({ital T}{sub {ital c}}) in radiation-damaged films; gives an upper bound on {ital T}{sub {ital c}}{proportional_to}{ital n}{sub {ital s}}, where {ital n}{sub {ital s}} is the zero-temperature superfluid density; and shows that, with screening, phase fluctuations give a linear temperature dependence of {ital n}{sub {ital s}} at low temperatures.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 44877
• Journal Information: Physical Review Letters, Vol. 74, Issue 16; Other Information: PBD: 17 Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HIGH-TC SUPERCONDUCTORS
TRANSPORT THEORY
ELECTRIC CONDUCTIVITY
TEMPERATURE DEPENDENCE
FLUCTUATIONS