High-resolution angle-resolved photoemission spectroscopy of the momentum dependence of the superconducting gap i

T. Yokoya, T. Takahashi, T. Mochiku, K. Kadowaki

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The momentum dependence of the superconducting gap in (Formula presented)(Formula presented)Ca(Formula presented)(Formula presented) has been studied using high-resolution angle-resolved photoemission spectroscopy with nonpolarized light. The size of the superconducting gap obtained at several points on the Fermi surface shows a linear dependence with respect to the gap function of the (Formula presented) wave defined as (Formula presented). This suggests that the anomaly in the superconducting gap observed with polarized synchrotron-radiation light is not intrinsic, being probably due to the superstructure of the BiO plane, and rather the strong anisotropy of the superconducting gap, like the (Formula presented) symmetry, is intrinsic.

Original languageEnglish
Pages (from-to)14055-14057
Number of pages3
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number21
DOIs
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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