STRIPE STRUCTURE AND NONHOMOGENEITY OF THE CUO2 PLANE BY JOINT EXAFS AND DIFFRACTION

Authors
BIANCONI A SAINI NL LANZARA A LUSIGNOLI M ROSSETTI T RADAELLI PG BORDET P KVICK A OYANAGI H
Citation
A. Bianconi et al., STRIPE STRUCTURE AND NONHOMOGENEITY OF THE CUO2 PLANE BY JOINT EXAFS AND DIFFRACTION, Journal de physique. IV, 7(C2), 1997, pp. 735-740
Citations number
40
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
7
Issue
C2
Year of publication
1997
Part
2
Pages
735 - 740
Database
ISI
SICI code
1155-4339(1997)7:C2<735:SSANOT>2.0.ZU;2-A
Abstract
Local structure of the CuO2 plane in Bi2Sr2CaCu2O8+delta (Bi2212) supe rconductor has been solved by joint Cu K-edge extended X-ray absorptio n fine structure (EXAFS) and anomalous X-ray diffraction. The Cu-O pai r distribution function (PDF) has been measured by EXAFS and diffracti on. The displacement of the Cu ions along the c-axis shows largest amp litude and anharmonic character. The results show flat stripes of the CuO2 lattice of width L = 15 +/- 0.5 Angstrom that are separated by st ripes of bent CuO2 plane. The modulation of the CuO2 plane measured by EXAFS and anomalous diffraction has been discussed.