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

doi:10.1016/S0368-2048(00)00354-6

Topology of the Fermi surface and band structure near the Fermi level in the Pb-doped Bi₂Sr₂CuO_6+δ superconductor

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

Research output: Contribution to journal › Conference 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 Bi₂Sr₂CuO_6+δ superconductor by use of angle resolved photoemission spectroscopy with extremely high angular and energy resolutions. It is found that the band dispersion of Bi₂Sr₂CuO_6+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 Bi₂Sr₂CuO_6+δ.

Original language	English
Pages (from-to)	629-634
Number of pages	6
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	114-116
DOIs	https://doi.org/10.1016/S0368-2048(00)00354-6
Publication status	Published - Mar 2001
Externally published	Yes
Event	8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA Duration: Aug 8 2000 → Aug 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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Takeuchi, T., Yokoya, T., Shin, S., Jinno, K., Matsuura, M., Kondo, T., Ikuta, H., & Mizutani, U. (2001). Topology of the Fermi surface and band structure near the Fermi level in the Pb-doped Bi₂Sr₂CuO_6+δ superconductor. Journal of Electron Spectroscopy and Related Phenomena, 114-116, 629-634. https://doi.org/10.1016/S0368-2048(00)00354-6

Topology of the Fermi surface and band structure near the Fermi level in the Pb-doped Bi₂Sr₂CuO_6+δ superconductor. / Takeuchi, T.; Yokoya, T.; Shin, S.; Jinno, K.; Matsuura, M.; Kondo, T.; Ikuta, H.; Mizutani, U.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 114-116, 03.2001, p. 629-634.

Research output: Contribution to journal › Conference article

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

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.",

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AU - Takeuchi, T.

AU - Yokoya, T.

AU - Shin, S.

AU - Jinno, K.

AU - Matsuura, M.

AU - Kondo, T.

AU - Ikuta, H.

AU - Mizutani, U.

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N2 - 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.

AB - 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.

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