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
复制标题
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
复制
发表时间:
2008
影响因子:
1.7
通讯作者:
Y. Yamada
中科院分区:
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
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.
登录
查看更多内容
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
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
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