Tunneling spectroscopy of single crystal BI2SR2CACU2O8

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

Research output: Contribution to journalArticle

Abstract

We report an extensive study of conventional tunnel junctions with Pb counterelectrodes on cleaved ab planes of Bi2Sr2CaCu2O8 single crystals with natural barriers. A two-gap structure has been observed for high quality fresh junctions: the inner gap Δ1(T) is BCS-like, the outer gap ΔA0(T) is not BCS-like. The fitted outer gap Δo(0)=26 meV, and 2Δo(0)/kTc-6.7. For older junctions only a smooth conductance with a broadened single gap shows up.

Original languageEnglish (US)
Pages (from-to)1481-1483
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume52
Issue number11-12
DOIs
StatePublished - 1991

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Tunnel junctions
Single crystals
Spectroscopy
single crystals
spectroscopy
tunnel junctions

Keywords

  • BiSrCaCuO two energy gaps
  • high T
  • tunneling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Tunneling spectroscopy of single crystal BI2SR2CACU2O8 . / Tao, H. J.; Lu, Farun; Wolf, E. L.

In: Journal of Physics and Chemistry of Solids, Vol. 52, No. 11-12, 1991, p. 1481-1483.

Research output: Contribution to journalArticle

Tao, H. J. ; Lu, Farun ; Wolf, E. L. / Tunneling spectroscopy of single crystal BI2SR2CACU2O8 . In: Journal of Physics and Chemistry of Solids. 1991 ; Vol. 52, No. 11-12. pp. 1481-1483.
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