CHANGES IN THE DISTRIBUTION OF ELECTRON-DENSITY IN ND2-XCEXCUO4-DELTA, X=0.13 DURING COOLDOWN

In a previous paper [1] we described the influence of Ce-doping on the distribution of the electron density in the HTSC-compound Nd2-xCexCuO 4-delta. The main feature of the doping which appeared on the electron density maps is the rearrangement of the charge density at the Cu pos ition. Also the formation of a strong positive charge density maximum at the Nd/Ce position could be observed. By cooling down the sample fr om 300 K to 25 K this maximum splits up. Further calculations to expla in this behaviour have been carried out.