Abstract
We have investigated the charge ordering (CO) in magnetite below the Verwey transition. A new set of half-integer and mixed-integer superlattice reflections of the low-temperature phase have been studied by x-ray resonant scattering. None of these reflections show features characteristic of CO. We demonstrate the absence of CO along the c axis with the periodicity of either the cubic lattice q=(001) or the doubled cubic lattice q=(001/2). This result suggests that the Verwey transition is caused by strong electron-phonon interaction instead of an electronic ordering on the octahedral Fe atoms.
Subias, Gloria;
Garcia, Joaquin;
Blasco, Javier;
Grazia Proietti, M;
Concepcion Sanchez, M;
[1]
Renevier, Hubert
[2]
- Instituto de Ciencia de Materiales de Aragon, CSIC-Universidad de Zaragoza, Pza. San Francisco s/n 50009 Zaragoza (Spain)
- CEA-Departement de Recherche Fondamentale sur la Matiere Condensee, SP2M/Nanostructures et Rayonnement Synchrotron, 17 avenue de Martyrs 38042 Grenoble (France)
Citation Formats
Subias, Gloria, Garcia, Joaquin, Blasco, Javier, Grazia Proietti, M, Concepcion Sanchez, M, and Renevier, Hubert.
Magnetite, a model system for mixed-valence oxides, does not show charge ordering.
United States: N. p.,
2004.
Web.
doi:10.1103/PhysRevLett.93.156408.
Subias, Gloria, Garcia, Joaquin, Blasco, Javier, Grazia Proietti, M, Concepcion Sanchez, M, & Renevier, Hubert.
Magnetite, a model system for mixed-valence oxides, does not show charge ordering.
United States.
https://doi.org/10.1103/PhysRevLett.93.156408
Subias, Gloria, Garcia, Joaquin, Blasco, Javier, Grazia Proietti, M, Concepcion Sanchez, M, and Renevier, Hubert.
2004.
"Magnetite, a model system for mixed-valence oxides, does not show charge ordering."
United States.
https://doi.org/10.1103/PhysRevLett.93.156408.
@misc{etde_20617597,
title = {Magnetite, a model system for mixed-valence oxides, does not show charge ordering}
author = {Subias, Gloria, Garcia, Joaquin, Blasco, Javier, Grazia Proietti, M, Concepcion Sanchez, M, and Renevier, Hubert}
abstractNote = {We have investigated the charge ordering (CO) in magnetite below the Verwey transition. A new set of half-integer and mixed-integer superlattice reflections of the low-temperature phase have been studied by x-ray resonant scattering. None of these reflections show features characteristic of CO. We demonstrate the absence of CO along the c axis with the periodicity of either the cubic lattice q=(001) or the doubled cubic lattice q=(001/2). This result suggests that the Verwey transition is caused by strong electron-phonon interaction instead of an electronic ordering on the octahedral Fe atoms.}
doi = {10.1103/PhysRevLett.93.156408}
journal = []
issue = {15}
volume = {93}
journal type = {AC}
place = {United States}
year = {2004}
month = {Oct}
}
title = {Magnetite, a model system for mixed-valence oxides, does not show charge ordering}
author = {Subias, Gloria, Garcia, Joaquin, Blasco, Javier, Grazia Proietti, M, Concepcion Sanchez, M, and Renevier, Hubert}
abstractNote = {We have investigated the charge ordering (CO) in magnetite below the Verwey transition. A new set of half-integer and mixed-integer superlattice reflections of the low-temperature phase have been studied by x-ray resonant scattering. None of these reflections show features characteristic of CO. We demonstrate the absence of CO along the c axis with the periodicity of either the cubic lattice q=(001) or the doubled cubic lattice q=(001/2). This result suggests that the Verwey transition is caused by strong electron-phonon interaction instead of an electronic ordering on the octahedral Fe atoms.}
doi = {10.1103/PhysRevLett.93.156408}
journal = []
issue = {15}
volume = {93}
journal type = {AC}
place = {United States}
year = {2004}
month = {Oct}
}