Charge-Orbital Ordering and Verwey Transition in Magnetite Measured by Resonant Soft X-Ray Scattering

Journal Article · Fri Mar 10 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.96.0· OSTI ID:20778771

Huang, D J ^[1]; Lin, H -J; Okamoto, J; Hsu, C -H; Huang, C -M; Yang, C S ^[1]; Chao, K S; Wu, W B ^[2]; Jeng, H -T ^[3]; Guo, G Y ^[4]; Ling, D C ^[5]; Chen, C T ^[1]

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1. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)
2. Department of Electrophysics, National Chiao-Tung University, Hsinchu 30010, Taiwan (China)
3. Physics Division, National Center for Theoretical Sciences, Hinchu 30013, Taiwan (China)
4. Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China)
5. 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

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FERMI LEVEL
HYSTERESIS
IRON COMPOUNDS
LATTICE PARAMETERS
MAGNETITE
PERIODICITY
SOFT X RADIATION
TRANSITION TEMPERATURE
X-RAY DIFFRACTION