Multiplet Structures in the 3dand 4dCore Photoemission Spectra for La Compounds

Effects of the hybridization between the 4 f and valence band states on the multiplet structures in La 3 d and 4 d core X-ray photoemission spectra (XPS) are discussed for LaF 3 , LaCl 3 , and La 2 O 3 on the basis of the Anderson model considering the multiplets arising from the interaction between a 4 f electron and a core hole described by the Slater integrals. An interpretation for the apparent success of the previous analyses of the 3 d -XPS excluding the multiplet effect is given, and the necessity of including it in the analyses of the 4 d -XPS is discussed.