Low-temperature AC conductivity of Bi2Sr2CaCu2O8+δ

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Abstract

We report measurements of anomalously large dissipative conductivities, σ1, in Bi2Sr2CaCu2O8+δ at low temperatures. We have measured the complex conductivity of Bi2Sr2CaCu2O8+δ thin films at 100-600 GHz as a function of doping from the underdoped to the overdoped state. At low temperatures there exists a residual σ1 which scales with the T = 0 superfluid density as the doping is varied. This residual σ1 is larger than the possible contribution to σ1 from a thermal population of quasiparticles (QP) at the d-wave gap nodes.

Original languageEnglish (US)
Pages (from-to)212-213
Number of pages2
JournalPhysica B: Condensed Matter
Volume280
Issue number1-4
DOIs
StatePublished - May 11 2000
Event22nd International Conference on Low Temperature Physics (LT-22) - Helsinki, Finl
Duration: Aug 4 1999Aug 11 1999

ASJC Scopus subject areas

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

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