Superfluid and normal fluid density in high-Tc superconductors

D. B. Tanner*, H. L. Liu, M. A. Quijada, A. M. Zibold, H. Berger, R. J. Kelley, M. Onellion, F. C. Chou, D. C. Johnston, J. P. Rice, D. M. Ginsberg, J. T. Markert

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


The electronic properties of the cuprate superconductors have been studied by measuring the reflectance over the frequency range from the far-infrared to the near-ultraviolet (roughly, 10 meV-5 eV). There is an interesting behavior in both the normal state and the superconducting state. In the normal state, there is the well-known non-Drude distribution of the doping-induced spectral weight. In the superconducting state, the spectral weight of the superconducting condensate correlates with Tc in a variety of materials. Remarkably, in optimally doped superconductors, only about 20% of the doping-induced carriers joins the superfluid; the rest of the spectral weight remains at finite frequencies.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalPhysica B: Condensed Matter
Publication statusPublished - 1998 Jan 1
Externally publishedYes


  • Far-infrared spectroscopy
  • High-temperature superconductors
  • Optical properties
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Superfluid and normal fluid density in high-Tc superconductors'. Together they form a unique fingerprint.

Cite this