Superconductivity in Bad Metals
V. J. Emery, S. A. Kivelson
DOI 10.1103/PhysRevLett.74.3253 · Physical Review Letters
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Abstract
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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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