Many-body interactions in Bi-based high-Tc cuprates studied by angle-resolved photoemission spectroscopy

T. Sato, H. Matsui, K. Terashima, T. Takahashi, H. Ding, H. B. Yang, S. C. Wang, T. Fujii, T. Watanabe, A. Matsuda, T. Terashima, K. Kadowaki

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Systematic angle-resolved photoemission spectroscopy (ARPES) has been performed on Bi2Sr2Can-1CunO 2n+4 (n=1-3). For n=2 and 3, the dispersion kink becomes pronounced on approaching (π, 0) below Tc, while a kink appears only around the nodal direction above Tc. This indicates that the coupling of electrons with magnetic resonance mode plays a dominant role in the superconducting state for multi-layered cuprates. Ultrahigh-resolution (ΔE=1.3 meV) ARPES result for n=2 indicates that spectra around (π, 0) below Tc is understood in terms of (1) the coupling of electrons with the resonance mode, (2) the real-space inhomogeneity, and (3) the impurity states in the vicinity of EF.

Original languageEnglish
Pages (from-to)628-631
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Issue number1-3
Publication statusPublished - Jan 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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