Interplay between Raman and Fluorescence-Like Components in Resonant X-ray Emission Spectra of Degenerate d^0 and d^1 Systems : Condensed Matter Electronic Properties, etc.
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概要
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Resonant X-ray emission spectra (RXES) are theoretically studied with a doubly-degenerate one-dimensional periodic Anderson model under d^0 and d^1 fillings, together with normal X-ray emission spectra (NXES) and X-ray absorption spectra (XAS). The model is regarded as a simplified model of band insulators such as TiO_2, and Mott-Hubbard insulators such as Ti_2O_3. Comparing with nondegenerate model calculations, we point out the important role of orbital degeneracy in reproducing experimental excitation energy dependence of RXES. The calculated results exhibit interplay between Raman and fluorescence-like components in both band insulator and Mott-Hubbard insulator. The former and latter components reflect the local point symmetry and the translational symmetry of the system, respectively. Our results qualitatively well explain Ti 3d-2p RXES of TiO_2 and Ti_2O_3.
- 社団法人日本物理学会の論文
- 2000-06-15
著者
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KOTANI Akio
Institute for Solid State Physics,University of Tokyo
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小谷 章雄
SPring-8
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小谷 章雄
理研 Spring-8:高エ研
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Kotani Akio
Department Of Mechanical Engineering Osaka University
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小谷 章雄
理化学研究所播磨研究所
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IDE Tsuyoshi
Institute for Solid State Physics, The University of Tokyo
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Kotani Akio
Institute For Solid State Physics The University Of Tokyo
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Ide Tsuyoshi
Institute For Solid State Physics The University Of Tokyo
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Ide Tsuyoshi
Institute For Solid State Physics The University Of Tokyo:(present)ibm Tokyo Research Laboratory
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Kotani Akio
Institut De Physique Et Chimiedes Materiaux De Strasbourg Cnrs
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KOTANI Akio
Department of Physics, Tohoku University : Institute for Solid State Physics, University of Tokyo
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