Impurity-state-like nature of Fermi-liquid states in Bi2Sr2CaCu2O8 observed by photoemission and x-ray absorption

H. Matsuyama, T. Takahashi, H. Katayama-Yoshida, T. Kashiwakura, Y. Okabe, S. Sato, N. Kosugi, A. Yagishita, K. Tanaka, H. Fujimoto, H. Inokuchi

研究成果: Article査読

94 被引用数 (Scopus)

抄録

Photoemission and X-ray absorption spectroscopy have been performed on Bi2Sr2Ca1-xYxCu2O8 in which the hole concentration is controlled by the ratio between Ca and Y atoms. It was found that the density of electronic states at the Fermi level gradually increases as the hole concentration with almost no rigid shift of the electronic structure with respect to the Fermi level. This suggests that the electronic states at the Fermi level (Fermi-liquid states) would not be simple one-electron states but be a kind of impurity states produced through the strong hybridization between doped O2p hole orbitals and empty Cu3d orbitals.

本文言語English
ページ(範囲)567-570
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
160
5-6
DOI
出版ステータスPublished - 1989 10 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

フィンガープリント

「Impurity-state-like nature of Fermi-liquid states in Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8</sub> observed by photoemission and x-ray absorption」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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