Electronic Structure of Superconducting and Non-superconducting Pr2Ba4Cu7O15-δ Revealed by Photoemission Spectroscopy

Electronic Structure of Superconducting and Non-superconducting Pr2Ba4Cu7O15-δ Revealed by Photoemission Spectroscopy
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光电发射光谱揭示超导和非超导Pr2Ba4Cu7O15-δ的电子结构

DOI:
10.1143/jpsj.77.074710
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发表时间:
2008
影响因子:
1.7
通讯作者:
Y. Yamada
Y. Yamada
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Y. Wakisaka;K. Takubo;T. Sudayama;J. Son;T. Mizokawa;M. Arita;H. Namatame;M. Taniguchi;S. Sekiya;K. Fukuda;F. Ishikawa;Y. Yamada

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为了理解Pr 2Ba 4Cu 7 O 15-δ(Pr 247)的链驱动超导电性,我们用光电子能谱研究了烧结态非超导Pr 247和退火态超导Pr 247样品的电子结构.退火引起的O 1 s、Ba 3d、Pr 4d和Cu 2 p芯能级的能量移动表明,退火掺杂的电子主要填充在局域的Fe 3 O 4 bacher-Rice(FR)态.从金属Cu-O双链导出费米能级(EF)附近的光电发射谱ρ(ω),ρ(ω)可用幂律函数加阶跃函数A ω α + B θ(ω)拟合。烧结态和退火态Pr 247的EF附近的ρ(ω)是不可区分的,指数α为1.5。这些结果表明,Cu-O双链提供了近E-F的光谱权重,退火影响的是定域的FR态而不是近-E-F态.
In order to understand the nature of chain-driven superconductivity in Pr 2 Ba 4 Cu 7 O 15-δ (Pr247), we have studied the electronic structure of as-sintered non-superconducting Pr247 and annealed superconducting Pr247 samples using photoemission spectroscopy. The O 1 s , Ba 3 d , Pr 4 d , and Cu 2 p core-level energy shifts by annealing indicate that electrons doped by the annealing mainly fill the localized Fehrenbacher–Rice (FR) state. The photoemission spectra ρ(ω) near the Fermi level ( E F ) are derived from the metallic Cu–O double chain and can be fitted to the power-law function plus step function A ω α + B θ(ω). ρ(ω) near E F is indistinguishable between the as-sintered and annealed Pr247 and the exponent α is ∼1.5. These results indicate that the Cu–O double chain provides the spectral weight near E F and that the annealing affects the localized FR state instead of the near- E F state.
DOI: 10.1103/physrevlett.85.4779
发表时间: 2000-11
影响因子: 8.6
作者:
T. Mizokawa;Changyoung Kim;Z. Shen;A. Ino;T. Yoshida;A. Fujimori;M. Goto;H. Eisaki;H. Eisaki;S. Uchida;M. Tagami;K. Yoshida;A. Rykov;Y. Siohara;K. Tomimoto;Setsuko Tajima;Y. Yamada;Shigeru Horii;N. Yamada;Y. Yamada;I. Hirabayashi
通讯作者: T. Mizokawa;Changyoung Kim;Z. Shen;A. Ino;T. Yoshida;A. Fujimori;M. Goto;H. Eisaki;H. Eisaki;S. Uchida;M. Tagami;K. Yoshida;A. Rykov;Y. Siohara;K. Tomimoto;Setsuko Tajima;Y. Yamada;Shigeru Horii;N. Yamada;Y. Yamada;I. Hirabayashi
DOI: 10.1142/s0218625x02002609
发表时间: 2002-02
影响因子: 1.1
作者:
M. Arita;K. Shimada;H. Namatame;M. Taniguchi
通讯作者: M. Arita;K. Shimada;H. Namatame;M. Taniguchi
超导和非超导 Pr247 化合物之字形链的铜自旋动力学
DOI: --
发表时间: 2005
期刊: Physica C 426-431
影响因子: --
作者:
Yuh Yamada;A.Matsushita;S.Watanabe et al.
通讯作者: S.Watanabe et al.
DOI: --
发表时间: 2005
期刊: J. Phys. Soc. Jpn. Vol.74
影响因子: --
作者:
Kazuhiro;Sano
通讯作者: Sano