標題: Possible evidence for the existence of the Fehrenbacher-Rice band: O K-edge XANES study on Pr1-xCaxBa2Cu3O7
作者: Hong, IP
Lin, JY
Chen, JM
Chatterjee, S
Liu, SJ
Gou, YS
Yang, HD
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
公開日期: 1-Apr-2002
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.
URI: http://dx.doi.org/10.1209/epl/i2002-00614-6
http://hdl.handle.net/11536/28882
ISSN: 0295-5075
DOI: 10.1209/epl/i2002-00614-6
期刊: EUROPHYSICS LETTERS
Volume: 58
Issue: 1
起始頁: 126
結束頁: 132
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