EVIDENCE OF WEAKENING OF THE PR4F-O2P HYBRIDIZATION IN Y0.4PR0.6BA2-XSRXCU3O7-DELTA - A PHOTOEMISSION SPECTRUM STUDY

Authors
CAO GH QIAN YT LIU XM ZHANG YH JIAO ZK ZHANG QR
Citation
Gh. Cao et al., EVIDENCE OF WEAKENING OF THE PR4F-O2P HYBRIDIZATION IN Y0.4PR0.6BA2-XSRXCU3O7-DELTA - A PHOTOEMISSION SPECTRUM STUDY, Physica. C, Superconductivity, 282, 1997, pp. 973-974
Citations number
7
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
2
Pages
973 - 974
Database
ISI
SICI code
0921-4534(1997)282:<973:EOWOTP>2.0.ZU;2-3
Abstract
We have performed a photoemission study on Y0.4Pr0.6Ba2-xSrxCu3O7-delt a system. It was shown that the binding energies of Y3d, Ba3d, Sr3d an d Ols decreased while the Pr3d core level increased with increasing Sr content. The result strongly suggests that Sr-doping leads to the wea kening of Pr4f-O2p hybridization. We present a band picture to interpr et the revival of superconductivity induced by the Sr substitution.