ELECTRONIC-STRUCTURE OF THE T-ASTERISK-TYPE SUPERCONDUCTORS (BI0.5SR1.5)(Y,CE)2CU2OY STUDIED BY PHOTOELECTRON-SPECTROSCOPY

Authors
ZHANG YJ CHEN XH CAO LZ CHEN ZJ ZHU JS
Citation
Yj. Zhang et al., ELECTRONIC-STRUCTURE OF THE T-ASTERISK-TYPE SUPERCONDUCTORS (BI0.5SR1.5)(Y,CE)2CU2OY STUDIED BY PHOTOELECTRON-SPECTROSCOPY, Acta physica Sinica, 4(3), 1995, pp. 225-230
Citations number
NO
Categorie Soggetti
Physics
Journal title
Acta physica Sinica → ACNP
ISSN journal
10003290
Volume
4
Issue
3
Year of publication
1995
Pages
225 - 230
Database
ISI
SICI code
1000-3290(1995)4:3<225:EOTTS
Abstract
The electronic structure of T-type compounds (Bi0.5Sr1.5)(Y2-xCex)Cu2 Oy has been studied by X-ray photoelectron spectroscopy. From analysis of the results, it was found that cation deficiency in Ce4+ introduce d holes to conduction planes in the T phase as in the p-type infinite layer compounds. Some Cu ions in the sample without cation-deficiency contained two-oxygen coordination, which resulted in the incompletene ss of the CuO2 sheets. Bi ions in the T phase cuprates take exact val ence of 3+, Pb ions cannot replace them due to the too large an ionic radius of Pb2+/Pb4+.