Zn-substitution effects on the low-energy quasiparticles in Bi2Sr2CaCu2O8+δ studied by angle-resolved photoemission spectroscopy

S. Nishina, T. Sato, T. Takahashi, S. C. Wang, H. B. Yang, H. Ding, K. Kadowaki

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1 Citation (Scopus)


We have performed high-resolution angle-resolved photoemission spectroscopy on Bi2Sr2Ca(Cu1-xZnx)2O8+δ (x = 0.0, 0.05) to study the Zn-substitution effects on the low-energy quasiparticles. We found that the Zn substitution causes the reduction of the quasiparticle intensity and the superconducting gap, while it does not affect the normal-state band dispersion, the Fermi surface, or the quasiparticle lifetime. This indicates that the Zn substitution locally destroys or hinders the superconducting pairing and as a result decreases the superfluid density, but does not affect the long-range coherence among quasiparticles.

Original languageEnglish
Pages (from-to)1069-1072
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Issue number6-8
Publication statusPublished - 2002


  • A. Oxides
  • C. Photoelectron spectroscopy
  • D. Superconductivity

ASJC Scopus subject areas

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

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