Optical spectral weight distribution in d-wave superconductors

Abstract

The distribution in frequency of optical spectral weight remaining under the real part of the optical conductivity in the superconducting state of a d-wave superconductor depends on impurity concentration, on the strength of the impurity potential as well as on temperature and there is some residual absorption even at T = 0. In BCS theory the important weight is confined to the microwave region if the scattering is sufficiently weak. In an Eliashberg formulation substantial additional weight is to be found in the incoherent, boson assisted background which falls in the infrared and is not significantly depleted by the formation of the condensate, although it is shifted as a result of the opening of a superconducting gap.

14 Pages, 9 Figures, Accepted for publication in Phys. Rev. B

References in corpus (20)

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• Comparison of in- and out-of-plane charge dynamics in YBa_2Cu_3O_{6.95}
• Residual absorption at zero temperature in d-wave superconductors
• Electromagnetic response of superconductors and optical sum rule
• Quasiparticle Lifetimes and the Conductivity Scattering Rate
• Microwave conductivity of YBa${}_2$Cu${}_3$O${}_{6.99}$ including inelastic scattering
• Spin dynamics in high-$T_C$ superconductors
• Signatures of Spin Degrees of Freedom in Charge Dynamics of YBa_2Cu_3O_6.95

Cited by in corpus (9)

• Scaling of the superfluid density in high-temperature superconductors
• Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations
• The in-plane electrodynamics of the superconductivity in Bi2Sr2CaCu2O8+d: energy scales and spectral weight distribution
• Optical determination of the superconducting energy gap in electron-doped Pr_{1.85}Ce_{0.15}CuO_4
• Zero temperature optical conductivity of ultra-clean Fermi liquids and superconductors
• Infrared Signature of the Superconducting State in Pr(2-x)Ce(x)CuO(4)
• Optical Sum Rule in Finite Bands
• Optical sum rule in metals with a strong interaction
• Optical sum in Nearly Antiferromagnetic Fermi Liquid Model