Optical conductivity of nodal superconductors

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Abstract

Recently a number of nodal superconductors have been identified. These include high Tc cuprate superconductors, the ones in Sr2RuO4, CeCoIn5, κ-(ET)2Cu(NCS)2, UPd2Al3, etc. The optical conductivity for E parallel to the conducting plane is the same for these nodal superconductors. Limiting our study to T = 0 K, we compute σ1(ω) and ωσ2(ω) in the presence of impurities. When the impurity scattering is in the unitary limit, σ1(ω) has a peak for ω/Δ ∼ 0.1-0.5. This may account for the peak seen by Basov et al. [D.N. Basov, B. Dabrowski, T. Timusk, Phys. Rev. Lett. 81 (1998) 2132] in Zn-substituted YBCO.

Original languageEnglish
Pages (from-to)903-908
Number of pages6
JournalCurrent Applied Physics
Volume6
Issue number5
DOIs
Publication statusPublished - Sep 1 2006

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Keywords

  • High T superconductors
  • Impurity scattering
  • Optical conductivity
  • nodal superconductors

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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