Observation of pseudogap in Bi2Sr2CaCu2O8+δ single crystals with electron tunneling spectroscopy

H. J. Tao, Farun Lu, E. L. Wolf

Research output: Contribution to journalArticlepeer-review


We report electron tunneling evidence for a pseudogap in the normal state excitation spectrum of as-grown Bi2Sr2CaCu2O8+δ (Bi2212) single crystals. The normalized conductance curves show that the gap structure does not disappear at Tc but at much higher temperature T*; the lower bound of T* is within 110 K to 150 K for the investigated three junctions. The result gives a support for the existence of paired carriers in the normal state of cuprate superconductor Bi2212.

Original languageEnglish (US)
Pages (from-to)1507-1508
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue numberPART 3
StatePublished - Aug 1997

ASJC Scopus subject areas

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


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