Site-specific electronic structure of Pr in Pr1+xBa2-xCu3O7-delta - art. no. 134522

Authors
Staub, U Shi, M O'Conner, AG Kramer, MJ Knapp, M
Citation
U. Staub et al., Site-specific electronic structure of Pr in Pr1+xBa2-xCu3O7-delta - art. no. 134522, PHYS REV B, 6313(13), 2001, pp. 4522
Citations number
34
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6313
Issue
13
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010401)6313:13<4522:SESOPI>2.0.ZU;2-L
Abstract
We report on resonant x-ray powder-diffraction measurements in the vicinity of the Pr L-3 absorption edge of Pr1-xBa2-xCu3O7-delta. The Pr site occupa tion has been accurately determined: 6 +/- 2% of the Pr is on the Ba site. From an analysis of the energy dependence of selected Bra,og reflections, t he site-specific oxidation state of Pr has been obtained. These results are discussed in the context of models describing the suppression of supercond uctivity by Pr, and they indicate that Pr on the R site is responsible for T-c suppression.