Oxygen Chain Disorder as the Weak Scattering Source in YBa${}_2$Cu${}_3$O${}_{6.50}$

J. S. Bobowski, P. J. Turner, R. Harris +3

The microwave conductivity of an ultra-pure single crystal of YBa${}_2$Cu${}_3$O${}_{6.50}$ has been measured deep in the superconducting state as a continuous function of frequency from…