Possible evidence for the existence of the Fehrenbacher-Rice band:: O K-edge XANES study on Pr1-xCaxBa2Cu3O7

被引：11

作者：

Hong, IP ^{[1
]}

Lin, JY

Chen, JM

Chatterjee, S

Liu, SJ

Gou, YS

Yang, HD

机构：

[1] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan

[2] Natl Chiao Tung Univ, Inst Phys, Hsinchu 300, Taiwan

[3] Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan

[4] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan

来源：

EUROPHYSICS LETTERS | 2002年 / 58卷 / 01期

关键词：

D O I：

10.1209/epl/i2002-00614-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray absorption near edge structure (XANES), resistivity, and thermoelectric power have been measured on Pr1-xCaxBa2Cu3O7. These data reveal an intriguing electronic structure in Pr-doped cuprates. The absorption peak in XANES associated with the Fehrenbacher-Rice (FR) band has been identified. The Ca-doped holes in Pr1-xCaxBa2Cu3O7 go to both the Zhang-Rice (ZR) and FR bands. Comparative studies on the related samples suggest that the FR band is partially filled and highly localized. Implications of these results on other recent experiments, such as the observation of superconductivity in PrBa2Cu3O7 single crystals, are discussed.

引用

页码：126 / 132

页数：7

共 25 条

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