d-Wave Model for Microwave Response of High-Tc Superconductors

Details d-Wave Model for Microwave Response of High-Tc Superconductors d-Wave Model for Microwave Response of High-Tc Superconductors

1994-03-06

arxiv.org/abs/cond-mat/9403022v2

Physics

Condensed Matter

33 pages, plain TeX including all macros. 16 uuencoded, compressed postscript figures are appended at the end

Scientific paper

10.1103/PhysRevB.50.10250

We develop a simple theory of the electromagnetic response of a d- wave superconductor in the presence of potential scatterers of arbitrary s-wave scattering strength and inelastic scattering by antiferromagnetic spin fluctuations. In the clean London limit, the conductivity of such a system may be expressed in "Drude" form, in terms of a frequency-averaged relaxation time. We compare predictions of the theory with recent data on YBCO and BSSCO crystals and on YBCO films. While fits to penetration depth measurements are promising, the low temperature behavior of the measured microwave conductivity appears to be in disagreement with our results. We discuss implications for d-wave pairing scenarios in the cuprate superconductors.

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