POLARIZED CU-L ABSORPTION-SPECTRA OF BI2SR2CA1-XYXCU2O8(X=0.0,0.6)

The linear polarized Cu L absorption spectra of Bi2Sr2Ca1-xYxCu2O8 (x= 0.0,0.6) single crystals were measured. The polarization dependence is clearly observed in the Cu 2p3/2 absorption peak. The energy shift be tween the E//c and E//ab spectra was about 0.5eV for x=0.0 and 0.3eV f or x=0.6 sample. The angle-dependent X-ray photoemission spectra were also measured. The origin of the E//c component may be explained by th e Pseudo-Jahn-Teller distortion of the Cu site.