Electron energy loss spectroscopy on oxygen k-edge fine structure of YBa2Cu3Oycontaining dopants (La, Ca, Co)

Daisuke Shindo; Kenji Hiraga; Ayako Tokiwa; Takeshi Soga; Kiichi Hojou; Shigemi Furuno; Hitoshi Otsu; Satoru Nakajima; Makoto Hirabayashi; Masae Kikuchi; Yasuhiko Syono

doi:10.1143/JJAP.28.L1197

Electron energy loss spectroscopy on oxygen k-edge fine structure of YBa₂Cu₃O_ycontaining dopants (La, Ca, Co)

Daisuke Shindo, Kenji Hiraga, Ayako Tokiwa, Takeshi Soga, Kiichi Hojou, Shigemi Furuno, Hitoshi Otsu, Satoru Nakajima, Makoto Hirabayashi, Masae Kikuchi, Yasuhiko Syono

研究成果: Article › 査読

1 被引用数 (Scopus)

抄録

The fine structures of the oxygen K-edge in the Y-Ba-Cu-O system, in which hole content was controlled by reducing the oxygen content and doping elements (La, Ca and Co), were investigated by electron energy loss spectroscopy (EELS). When Ba(+2)and Y(+3) were replaced by La(+3) and Ca(+2), respectively, the oxygen content of the sample changed and the peak corresponding to the hole state near the Fermi energy sensitively changed with the average hole content. When Cu(+2) was replaced by Co(+3), T_c decreased drastically and the peak at the oxygen K-edge shifted to higher energy.

本文言語	English
ページ（範囲）	L1197-L1200
ジャーナル	Japanese Journal of Applied Physics
巻	28
号	7 A
DOI	https://doi.org/10.1143/JJAP.28.L1197
出版ステータス	Published - 1989 7月
外部発表	はい

ASJC Scopus subject areas

工学（全般）
物理学および天文学（全般）

文献へのアクセス

10.1143/JJAP.28.L1197

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引用スタイル

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title = "Electron energy loss spectroscopy on oxygen k-edge fine structure of YBa2Cu3Oycontaining dopants (La, Ca, Co)",

abstract = "The fine structures of the oxygen K-edge in the Y-Ba-Cu-O system, in which hole content was controlled by reducing the oxygen content and doping elements (La, Ca and Co), were investigated by electron energy loss spectroscopy (EELS). When Ba(+2)and Y(+3) were replaced by La(+3) and Ca(+2), respectively, the oxygen content of the sample changed and the peak corresponding to the hole state near the Fermi energy sensitively changed with the average hole content. When Cu(+2) was replaced by Co(+3), Tc decreased drastically and the peak at the oxygen K-edge shifted to higher energy.",

keywords = "Electron energy loss spectroscopy, High-T superconductor, Hole concentration, Near-edge fine structure, Oxygen K edge, Y-Ba-Cu-O",

author = "Daisuke Shindo and Kenji Hiraga and Ayako Tokiwa and Takeshi Soga and Kiichi Hojou and Shigemi Furuno and Hitoshi Otsu and Satoru Nakajima and Makoto Hirabayashi and Masae Kikuchi and Yasuhiko Syono",

year = "1989",

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doi = "10.1143/JJAP.28.L1197",

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TY - JOUR

T1 - Electron energy loss spectroscopy on oxygen k-edge fine structure of YBa2Cu3Oycontaining dopants (La, Ca, Co)

AU - Shindo, Daisuke

AU - Hiraga, Kenji

AU - Tokiwa, Ayako

AU - Soga, Takeshi

AU - Hojou, Kiichi

AU - Furuno, Shigemi

AU - Otsu, Hitoshi

AU - Nakajima, Satoru

AU - Hirabayashi, Makoto

AU - Kikuchi, Masae

AU - Syono, Yasuhiko

PY - 1989/7

Y1 - 1989/7

N2 - The fine structures of the oxygen K-edge in the Y-Ba-Cu-O system, in which hole content was controlled by reducing the oxygen content and doping elements (La, Ca and Co), were investigated by electron energy loss spectroscopy (EELS). When Ba(+2)and Y(+3) were replaced by La(+3) and Ca(+2), respectively, the oxygen content of the sample changed and the peak corresponding to the hole state near the Fermi energy sensitively changed with the average hole content. When Cu(+2) was replaced by Co(+3), Tc decreased drastically and the peak at the oxygen K-edge shifted to higher energy.

AB - The fine structures of the oxygen K-edge in the Y-Ba-Cu-O system, in which hole content was controlled by reducing the oxygen content and doping elements (La, Ca and Co), were investigated by electron energy loss spectroscopy (EELS). When Ba(+2)and Y(+3) were replaced by La(+3) and Ca(+2), respectively, the oxygen content of the sample changed and the peak corresponding to the hole state near the Fermi energy sensitively changed with the average hole content. When Cu(+2) was replaced by Co(+3), Tc decreased drastically and the peak at the oxygen K-edge shifted to higher energy.

KW - Electron energy loss spectroscopy

KW - High-T superconductor

KW - Hole concentration

KW - Near-edge fine structure

KW - Oxygen K edge

KW - Y-Ba-Cu-O

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

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