Resonant X-ray diffraction studies on the charge ordering in magnetite

Abstract

Here we show that the low temperature phase of magnetite is associated with an effective, although fractional, ordering of the charge. Evidence and a quantitative evaluation of the atomic charges are achieved by using resonant x-ray diffraction (RXD) experiments whose results are further analyzed with the help of ab initio calculations of the scattering factors involved. By confirming the results obtained from X-ray crystallography we have shown that RXD is able to probe quantitatively the electronic structure in very complex oxides, whose importance covers a wide domain of applications.

4 pages 4 figures, accepted for publication in PRL

References in corpus (4)

• Long Range Charge Ordering in Magnetite Below the Verwey Transition
• Charge and orbital order in Fe_3O_4
• Direct observation of orbital ordering in La${}_{0.5}$Sr${}_{1.5}$MnO${}_4$ using soft x-ray diffraction
• The implications of resonant x-ray scattering data on the physics of the insulating phase of V${}_2$O${}_3$

Cited by in corpus (26)

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• Mechanism of the Verwey transition in magnetite
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• Direct observation of t2g orbital ordering in magnetite
• Jahn-Teller distortion driven magnetic polarons in magnetite
• Electronic Orders in the Verwey Structure of Magnetite
• Anharmonicity due to Electron-Phonon Coupling in Magnetite
• Quantitative determination of bond order and lattice distortions in nickel oxide heterostructures by resonant x-ray scattering
• Direct observation of charge order and orbital glass state in multiferroic LuFe2O4
• Converse Magnetoelectric Effects in Fe3O4/BaTiO3 Multiferroic Hybrids
• Zener double exchange from local valence fluctuations in magnetite
• Short-Range Correlations in Magnetite above the Verwey Temperature
• Spin moment over 10-300 K and delocalization of magnetic electrons above the Verwey transition in magnetite
• A critical re-examination of resonant soft x-ray Bragg forbidden reflections in magnetite
• First-principles determined charge and orbital interactions in Fe${}_3$O${}_4$
• Phase separation in the non-equilibrium Verwey transition in magnetite
• Trimeron-phonon coupling in magnetite
• Verwey transition in Fe${}_3$O${}_4$ at high pressure: quantum critical behavior at the onset of metallization
• Microscopic theory of resonant soft x-ray scattering in systems with charge order
• Resonant x-ray scattering in 3d-transition-metal oxides: Anisotropy and charge orderings
• Pressure dependence of the Verwey transition in magnetite: an infrared spectroscopic point of view
• Direct observation of localization in the minority-spin-band electrons of magnetite below the Verwey temperature
• Ultrafast generation of hidden phases via energy-tuned electronic photoexcitation in magnetite
• Parity and Time-Reversal Breaking Effects on Resonant X-Ray Scattering at the Fe Pre-K-Edge in Magnetite
• Raman study of the Verwey transition in Magnetite at high-pressure and low-temperature; effect of Al doping
• Polaron physics and crossover transition in magnetite probed by pressure-dependent infrared spectroscopy