Drude behavior in the far-infrared conductivity of cuprate superconductors

H. L. Liu, M. Quijada, D. B. Romero, D. B. Tanner*, A. Zibold, G. L. Carr, H. Berger, L. Forró, L. Mihaly, G. Cao, O. Beom-Hoan, J. T. Markert, J. P. Rice, M. J. Burns, K. A. Delin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


When viewed at frequencies below about 8 THz (250 cm-1; 30 meV) the ab-plane optical conductivity of the cuprate superconductors (in their normal state) is well described by a Drude model. Examples include optimally-doped YBa2Cu3O7-δ and Bi 2Sr2CaCu2O8 ; even the underdoped phases have a Drude character to their optical conductivity. A residual Drude-like normal fluid is seen in the superconducting state in most cases; the scattering rate of this quasiparticle contribution collapses at Tc.

Original languageEnglish
Pages (from-to)606-618
Number of pages13
JournalAnnalen der Physik (Leipzig)
Issue number7-8
Publication statusPublished - 2006 Jul


  • Cuprate
  • Drude
  • Infrared

ASJC Scopus subject areas

  • General Physics and Astronomy


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