Anisotropic microwave conductivity of cuprate superconductors in the presence of CuO chain induced impurities

Abstract

The anisotropy in the microwave conductivity of the ortho-II YBa${}_2$Cu${}_3$O${}_{6.50}$ is studied within the kinetic energy driven superconducting mechanism. The ortho-II YBa${}_2$Cu${}_3$O${}_{6.50}$ is characterized by a periodic alternative of filled and empty $\hat{b}$-axis CuO chains. By considering the CuO chain induced extended anisotropy impurity scattering, the main features of the anisotropy in the microwave conductivity of the ortho-II YBa${}_2$Cu${}_3$O${}_{6.50}$ are reproduced based on the nodal approximation of the quasiparticle excitations and scattering processes, including the intensity and lineshape of the energy and temperature dependence of the $\hat{a}$-axis and $\hat{b}$-axis microwave conductivities. Our results also confirm that the $\hat{b}$-axis CuO chain induced impurity is the main source of the anisotropy.

arXiv comment6 pages, 3 figures

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• Electromagnetic response in kinetic energy driven cuprate superconductors: Linear response approach
• Influence of impurities on electronic structure in cuprate superconductors
• Extinction of quasiparticle scattering interference in cuprate superconductors
• Pseudogap and its connection to particle-hole asymmetry electronic state and Fermi arcs in cuprate superconductors
• Microwave conductivity due to impurity scattering in cuprate superconductors