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

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 1


  • Cuprate
  • Drude
  • Infrared

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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