Superconductivity, phase fluctuations, and the c-axis conductivity of bilayer high-temperature superconductors

N. Shah; A. J. Millis

doi:10.1103/PhysRevB.65.024506

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Superconductivity, phase fluctuations, and the c-axis conductivity of bilayer high-temperature superconductors

N. Shah, A. J. Millis

DOI 10.1103/PhysRevB.65.024506 · Physical Review B

T1

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Abstract

We present a theory of the interplane conductivity of bilayer high-temperature superconductors, focusing on the effect of quantal and thermal fluctuations on the oscillator strengths of the superfluid stiffness and the bilayer plasmon. We find that the opening of the superconducting gap and establishment of superconducting phase coherence each lead to redistribution of spectral weight over wide energy scales. The factor-of-2 relation between the superfluid stiffness and the change below Tc in the oscillator strength of the absorptive part of the conductivity previously derived for single-layer systems is found to be substantially modified in bilayer systems.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2Ca2Cu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown