Volume 58, Number 1, April 2002
|Page(s)||126 - 132|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 August 2002|
Possible evidence for the existence of the Fehrenbacher-Rice band: O K-edge XANES study on
Department of Physics, National Sun Yat-Sen
University Kaohsiung 804,
2 Institute of Physics, National Chiao Tung University - Hsinchu 300, Taiwan, ROC
3 Synchrotron Radiation Research Center (SRRC) - Hsinchu 300, Taiwan, ROC
4 Department of Electrophysics, National Chiao Tung University Hsinchu 300, Taiwan, ROC
Corresponding author: email@example.com
Accepted: 21 January 2002
X-ray absorption near edge structure (XANES), resistivity, and thermoelectric power have been measured on x . These data reveal an intriguing electronic structure in -doped cuprates. The absorption peak in XANES associated with the Fehrenbacher-Rice (FR) band has been identified. The -doped holes in x 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 single crystals, are discussed.
PACS: 74.72.-h – High- compounds / 74.25.Jb – Electronic structure / 74.62.Dh – Effects of crystal defects, doping and substitution
© EDP Sciences, 2002
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