ARPES studies of the superconducting gap in high-temperature superconductors

H. Ding, M. R. Norman, John Giapintzakis, Juan C. Campuzano, H. Claus, H. Wuehl, M. Randeria, A. Bellman, T. Yokoya, T. Takahashi, T. Mochiku, Kazuo Kadowaki, Don M. Ginsberg

Research output: Contribution to journalConference articlepeer-review


Using high resolution angle-resolved photoemission spectroscopy (ARPES), we measure the superconducting gap and its momentum dependence in the high temperature superconductors Bi 2Sr 2CaCu 2O 8 (Bi2212) and YBa 2Cu 3O 6.95 (Y123). It is found that umklapp bands due to the incommensurate superlattice in Bi2212 may obscure the intrinsic momentum dependence of the gap. By taking these into consideration, we find a d- wave-like gap function in Bi2212. We also report an unambiguous observation of the superconducting gap in Y123.

Original languageEnglish
Pages (from-to)496-506
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue number2/-
Publication statusPublished - Dec 1 1996
Externally publishedYes
EventSpectroscopic Studies of Superconductors. Part 2 (of 2) - San Jose, CA, USA
Duration: Jan 29 1996Feb 1 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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