Effect of Hole Itinerancy on XAS and XPS Spectra of the High-T_c Compounds
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概要
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Spectra of Cu 2p XPS, XAS, valence band XPS and BIS of the high-7'.. compoundsare calculated for Cu,0, (n >l) clusters. Effects of the hole itinerancy as well as thoseof the hole correlation on these spectra are investigated. Size dependence of the spectra including the valence band XPS and BIS as well is examined by extending thecalculation to linear clusters containing up to seven Cu atoms. It is concluded that theCu 2p XPS spectra consist generally of three groups of peaks which are assigned tocd"L), l cd') and l cd"L') final states. The last one which was not obtained by useof either a single Cu atom cluster or the impurity Anderson model appears in betweenthe first two in energy. The main peak corresponding to the l cd "'L>state shifts xvithconcentration of additional holes consistently with experimental data on Y-Ba-Cu oxides.
- 社団法人日本物理学会の論文
- 1990-12-15
著者
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Nishino Tomotoshi
Department Of Physics Faculty Of Science Kobe University
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Nishino Tomotoshi
Department of Physics,Faculty of Science,Osaka University
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