Application of the scattering-rate sum rule to the interplane optical conductivity of high-temperature superconductors: Pseudogap and bilayer effects

N. Shah; A. J. Millis

doi:10.1103/PhysRevB.64.174506

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Application of the scattering-rate sum rule to the interplane optical conductivity of high-temperature superconductors: Pseudogap and bilayer effects

N. Shah, A. J. Millis

DOI 10.1103/PhysRevB.64.174506 · Physical Review B

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Abstract

We use a recently proposed model of the interplane conductivity of high-temperature superconductors to investigate the “scattering-rate sum rule” introduced by Basov and co-workers. We present a derivation of the sum rule. The quantal and thermal fluctuations of the order parameter which have been argued to produce the observed pseudogap behavior are shown to increase the total integrated “scattering rate” but may either increase or decrease the “quasiparticle” contribution from frequencies greater than twice the superconducting gap.

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
YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown