Infrared conductivity of a dx2y2-wave superconductor with impurity and spin-fluctuation scattering

S. M. Quinlan, P. J. Hirschfeld, and D. J. Scalapino
Phys. Rev. B 53, 8575 – Published 1 April 1996
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Abstract

Calculations are presented of the in-plane far-infrared conductivity of a dx2y2-wave superconductor, incorporating elastic scattering due to impurities and inelastic scattering due to spin fluctuations. The impurity scattering is modeled by short-range potential scattering with arbitrary phase shift, while scattering due to spin fluctuations is calculated within a weak-coupling Hubbard model picture. The conductivity is characterized by a low-temperature residual Drude feature whose height and weight are controlled by impurity scattering, as well as a broad peak centered at 4Δ0 arising from clean-limit inelastic processes. Results are in qualitative agreement with experiment despite missing spectral weight at high energies. © 1996 The American Physical Society.

  • Received 16 October 1995

DOI:https://doi.org/10.1103/PhysRevB.53.8575

©1996 American Physical Society

Authors & Affiliations

S. M. Quinlan

  • Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6032
  • Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200

P. J. Hirschfeld

  • Department of Physics, University of Florida, Gainesville, Florida 32611

D. J. Scalapino

  • Department of Physics, University of California, Santa Barbara, California 93106-9530

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Vol. 53, Iss. 13 — 1 April 1996

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