Abstract
Investigating changes in the charged state of atoms upon superconductivity-suppressing substitutions is one of the methods to examine a relationship between the electronic structure of HTSC materials and the transition temperature to the superconducting state. In this paper, we measured Ebnd of the inner levels of Ba atoms in Co- and Zn-doped YBa2Cu3O7−δ by X-ray photoelectron spectroscopy. Upon copper substitution by Co and Zn atoms, Ebnd of the inner levels diminishes for Ba atoms but remains the same for Cu and O atoms. The change of Ebnd of the inner levels of Ba atoms is attributed to the change of the Fermi level position in the “anionic” sublattice of (Cu3O7−δ)7−.
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Additional information
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 35, No. 4, pp. 91–95, July–August, 1994.
Translated by L. Smolina
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Khudorozhko, G.F., Asanov, I.P., Mazalov, L.N. et al. X-ray photoelectron study of the state of Ba atoms in YBa2Cu3O7−δ doped with Co and Zn atoms. J Struct Chem 35, 505–508 (1994). https://doi.org/10.1007/BF02578361
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DOI: https://doi.org/10.1007/BF02578361