Microwave conductivity of YBa${}_2$Cu${}_3$O${}_{6.99}$ including inelastic scattering

Abstract

The fluctuation spectrum responsible for the inelastic scattering in YBa${}_2$Cu${}_3$O${}_{6.99}$ which was recently determined from consideration of the in-plane optical conductivity in the infrared, is used to calculate the temperature dependence of the microwave conductivity at several measured frequencies. Reasonable overall agreement can only be achieved if, in addition, some impurity scattering is included within a model potential intermediate between weak (Born) and strong (unitary) limit.

15 pages, 5 figures accepted for publication in Phys. Rev. B

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