Charge-Orbital Ordering and Verwey Transition in Magnetite Measured by Resonant Soft X-Ray Scattering
Journal Article
·
· Physical Review Letters
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)
- Department of Electrophysics, National Chiao-Tung University, Hsinchu 30010, Taiwan (China)
- Physics Division, National Center for Theoretical Sciences, Hinchu 30013, Taiwan (China)
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China)
- Department of Physics, Tamkang University, Taipei 25137, Taiwan (China)
We report experimental evidence for the charge-orbital ordering in magnetite below the Verwey transition temperature T{sub V}. Measurements of O K-edge resonant x-ray scattering on magnetite reveal that the O 2p states in the vicinity of the Fermi level exhibit a charge-orbital ordering along the c axis with a spatial periodicity of the doubled lattice parameter of the undistorted cubic phase. Such a charge-orbital ordering vanishes abruptly above T{sub V} and exhibits a thermal hysteresis, correlating closely with the Verwey transition in magnetite.
- OSTI ID:
- 20778771
- Journal Information:
- Physical Review Letters, Vol. 96, Issue 9; Other Information: DOI: 10.1103/PhysRevLett.96.096401; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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