Topology of the Fermi surface and band structure near the Fermi level in the Pb-doped Bi2Sr2CuO6+δ superconductor

T. Takeuchi, T. Yokoya, S. Shin, K. Jinno, M. Matsuura, T. Kondo, H. Ikuta, U. Mizutani

Research output: Contribution to journalConference article

17 Citations (Scopus)

Abstract

We report the doping level dependence of the band dispersion and the shape of the Fermi surface for Pb-doped Bi2Sr2CuO6+δ superconductor by use of angle resolved photoemission spectroscopy with extremely high angular and energy resolutions. It is found that the band dispersion of Bi2Sr2CuO6+δ is fairly rigid regardless of its doping level in the over-doped range, and that it shifts toward higher binding energy with decreasing doping. We also found that one of the heavily over-doped samples possesses an electron-like Fermi surface centered at (0,0) point, while less doped samples show a hole-like Fermi surface. This is the first observation of the transformation between electron-like and hole-like Fermi surfaces with varying the doping level in Bi2Sr2CuO6+δ.

Original languageEnglish
Pages (from-to)629-634
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume114-116
DOIs
Publication statusPublished - Mar 2001
Externally publishedYes
Event8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA
Duration: Aug 8 2000Aug 12 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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