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Short-range correlations in magnetite above the Verwey temperature
DOI:
10.1103/PhysRevX.4.011040
Authors:
Alexey
Bosak
(European Synchrotron Radiation Facility)
,
Dmitry
Chernyshov
(European Synchrotron Radiation Facility)
,
Moritz
Hoesch
(Diamond Light Source)
,
P
Piekarz
(Polish Academy of Sciences)
,
Mathieu
Le Tacon
(Max Planck Institute)
,
Michael
Krisch
(European Synchrotron Radiation Facility)
,
Andrzej
Kozlowski
(AGH-University of Science and Technology)
,
Andrzej M.
Oles
(Max Planck Institute)
,
Krzysztof
Parlinski
(Institute of Nuclear Physics, Polish Academy of Sciences)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Review X
, VOL 4 (1)
, PAGES 011040
State:
Published (Approved)
Published:
March 2014

Abstract: Magnetite, Fe3O4, is the first magnetic material discovered and utilized by mankind in Ancient Greece, yet it still attracts attention due to its puzzling properties. This is largely due to the quest for a full and coherent understanding of the Verwey transition that occurs at TV=124K and is associated with a drop of electric conductivity and a complex structural phase transition. A recent detailed analysis of the structure, based on single crystal diffraction, suggests that the electron localization pattern contains linear three-Fe-site units, the so-called trimerons. Here, we show that whatever the electron localization pattern is, it partially survives up to room temperature as short-range correlations in the high-temperature cubic phase, easily discernible by diffuse scattering. Additionally, ab initio electronic structure calculations reveal that characteristic features in these diffuse scattering patterns can be correlated with the Fermi surface topology.
Subject Areas:
Physics,
Materials
Facility: ID29 at ESRF; X06SA at SLS
Added On:
10/12/2014 21:42
Documents:
PhysRevX.4.011040.pdf
Discipline Tags:
Physics
Magnetism
Materials Science
Technical Tags: