XPS study of the new superconductor Nd-Ce-Cu-O

• In this paper we present XPS and Auger measurements on Nd1.85Ce0.15CuO3.96 and its parent material. These measurements show that electron doping, by substitution of Ce4+ in the case of Nd3+, results in a filling of the Cu 3d9 states. So the Ce doped compound will have a higher 3d10 contribution. The intensity of the Cu-2p satellite is very low for this new superconductor with respect to the high-Tc superconductors.

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superconductor

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