Many Body Effect in Inner Shell Photoemission and Photoabsorption Spectra of La Compounds

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  • Kotani Akio
    Department of Physics, Faculty of Science, Osaka University
  • Okada Masato
    Department of Physics, Faculty of Science, Osaka University
  • Jo Takeo
    Department of Physics, Faculty of Science, Osaka University
  • Bianconi A.
    Dipartimento di Fisica, Università di Roma “La Sapienza”
  • Marcelli A.
    Dipartimento di Fisica, Università di Roma “La Sapienza”
  • Parlebas J. C.
    LMSES, Université Louis Pasteur

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  • Many Body Effect in Inner Shell Photoem

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Theoretical analysis is made for spectra of the 3d core photoemission (3d-XPS) and 2p core photoabsorption (L3-XAS) in insulating La compounds La2O3, LaF3 and LaCl3 by using the single-site Anderson model. In order to give a consistent interpretation for 3d-XPS and L3-XAS, it is essentially important to take into account, in the final state of L3-XAS, the Coulomb interaction Ufd (between 4f and 5d electrons) and −Udc (between a 5d electron and a core hole) in addition to −Ufc (between a 4f electron and a core hole). A similar analysis is also presented for the intermetallic cornpound LaPd3.

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