Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite - CNRS - Centre national de la recherche scientifique
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2009

Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite

Résumé

Magnetite, Fe3O4 , displays a highly complex low-temperature crystal structure that may be charge and orbitally ordered. Many of the recent experimental claims of such ordering rely on resonant soft x-ray diffraction at the oxygen K and iron L edges. We have reexamined this system and undertaken soft x-ray diffraction experiments on a high-quality single crystal. Contrary to previous claims in the literature, we show that the intensity observed at the Bragg forbidden (00(1)/(2))c reflection can be explained purely in terms of the low-temperature structural displacements around the resonant atoms. This does not necessarily mean that magnetite is not charge or orbitally ordered but rather that the present sensitivity of resonant soft x-ray experiments does not allow conclusive demonstration of such ordering.
Fichier principal
Vignette du fichier
0811.3350.pdf (192.32 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00663326 , version 1 (11-05-2022)

Identifiants

Citer

Stuart B. Wilkins, Sergio Di Matteo, Thomas A. W. Beale, Yves Joly, Claudio Mazzoli, et al.. Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2009, 79 (20), pp.201102. ⟨10.1103/PHYSREVB.79.201102⟩. ⟨hal-00663326⟩
110 Consultations
16 Téléchargements

Altmetric

Partager

More