Conductivity due to classical phase fluctuations in a model for high-Tc superconductors
S. Barabash, D. Stroud, I.-J. Hwang
DOI 10.1103/PhysRevB.61.R14924 · Physical Review B
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Abstract
We consider the real part of the conductivity, σ1;αα(ω), arising from classical phase fluctuations in high-Tc superconductors. We show that ∫0∞σ1;ααdω≠0 below the superconducting transition temperature Tc, provided there is some quenched disorder in the system. Furthermore, for a fixed amount of quenched disorder, this integral at low temperatures is proportional to the zero-temperature superfluid density, in agreement with experiment. We calculate σ1;αα(ω) explicitly for a model of overdamped phase fluctuations.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2Ca2Cu2O8 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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