We discuss the character of the doped electron from the analysis of the doping dependence of the intensity ratio of the satellite to the main peak in the Cu 2p-XPS. According to the literature data 28 it is clear that the peak with binding energy of 206. The high resolution XPS spectrum of Nb 3d is shown in Fig. This indicates that Cu2+ and Cu+ ions co-exist in 0.04Nb/0.02Al-CuO ceramics 27. We discuss the character of the doped electron from the analysis of the doping dependence of the intensity ratio of the satellite to the main peak in the Cu 2p-XPS.ĪB - We study the effect of electron doping on the Cu 2p-XPS in the Nd2-zCezCuO4 system using the impurity Anderson model which consists of Cu 3d, Cu 4s, Cu 2p and O 2p states. smaller peak at 932.9eV should correspondto Cu 2p3/2 for Cu+ ions. N2 - We study the effect of electron doping on the Cu 2p-XPS in the Nd2-zCezCuO4 system using the impurity Anderson model which consists of Cu 3d, Cu 4s, Cu 2p and O 2p states. T1 - Theory of Cu 2p-XPS in electron-doped superconductor Nd2-zCezCuO4 Cu2þ.31,32 Very interestingly, the peaks A and B in the XANES spec-trum of NKNC are located at the same positions as the corresponding peaks in the spectrum of CuO, indicating that only Cu 2þ ions should existin the NKNC sample, instead of any Cu1þ or the mixed valences.
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