Critical reexamination of the experimental evidence of orbital ordering inLaMnO3 and La0.5Sr1.5MnO4

Authors
Benfatto, M Joly, Y Natoli, CR
Citation
M. Benfatto et al., Critical reexamination of the experimental evidence of orbital ordering inLaMnO3 and La0.5Sr1.5MnO4, PHYS REV L, 83(3), 1999, pp. 636-639
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
3
Year of publication
1999
Pages
636 - 639
Database
ISI
SICI code
0031-9007(19990719)83:3<636:CROTEE>2.0.ZU;2-8
Abstract
The experimental evidence for orbital ordering in LaMnO3 and La0.5Sr1.5MnO4 is critically reexamined in the light of realistic calculations based on m ultiple scattering theory and finite difference method for the resonant x-r ay scattered intensity at a forbidden ref lection. It is found that the dip ole resonant x-ray diffraction at the Mn K-edge is not a suitable technique for the direct observation of the orbital ordering in the considered compo unds.