J. Phys. IV France 7 (1997) C2-581-C2-582
XPS Studies of Single Crystals of Bi-2212, Tl-2212 and Tl-2223B.R. Sekhar1, F. Studer1, C. Martin1, P. Srivastava2 and K.B. Garg2
1 CRISMAT-ISMR.4, 14050 Caen cedex, France
2 CMPL, University of Rajasthan, Jaipur, India
High quality single crystals of Bi-2212, Tl-2212 and Tl-2223 were studied using X-ray photoelectron spectroscopy. From a deconvolution of the Cu2p3/2 main line, we have shown that the density of O 2p holes in the Cu-O planes are qualitatively similar in case of the Bi and Tl-2212 systems even though they have shown many other differences in their electronic structure properties. Also the results show a dependence of the density of holes on the number of Cu-O planes as we go from Tl-2212 to Tl-2223.
© EDP Sciences 1997