BCS-Like Bogoliubov Quasiparticles in High-[Formula presented] Superconductors Observed by Angle-Resolved Photoemission Spectroscopy

H. Matsui, T. Sato, T. Takahashi, S. C. Wang, H. B. Yang, H. Ding, T. Fujii, T. Watanabe, Azusa Matsuda

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We performed high-resolution angle-resolved photoemission spectroscopy on triple-layered high-[Formula presented] cuprate [Formula presented]. We have observed the full energy dispersion (electron and hole branches) of Bogoliubov quasiparticles and determined the coherence factors above and below [Formula presented] as a function of momentum from the spectral intensity as well as from the energy dispersion based on BCS theory. The good quantitative agreement between the experiment and the theoretical prediction suggests the basic validity of BCS formalism in describing the superconducting state of cuprates.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Issue number21
Publication statusPublished - 2003 Jan 1
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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