Low temperature scanning tunneling spectroscopy of Bi2Sr2CaCu2O8

Qun Chen, K. W. Ng

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A low temperature scanning tunneling microscope was used to measure the energy gap of Bi2Sr2CaCu2O8 in the direction perpendicular to the a-b plane. The derivative curve differs significantly from that expected for a Bardeen-Cooper-Schrieffer density of states. No multiple gap features have been observed. The energy gap was consistently measured to be about 21 meV.

Original languageEnglish
Pages (from-to)321-325
Number of pages5
JournalJournal of Alloys and Compounds
Issue number1-2
StatePublished - Apr 3 1992

Bibliographical note

Funding Information:
We gratefully thank Dr. H. J. Tao, Dr. Farun Lu and Dr. E. L. Wolf of Polytechnic University for providing the 2:2:1:2 samples for this experiment. This work is supported by the National Science Foundation (under Grant DMR 8913854) and the University of Kentucky Research Foundation.

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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