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Journal Article

Spin-resolved photoemission studies of epitaxial Fe3O4(100) thin films

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Huang, D. J., Chang, C. F., Chen, J., Tjeng, L. H., Rata, A. D., Wu, W. P., et al. (2002). Spin-resolved photoemission studies of epitaxial Fe3O4(100) thin films. Journal of Magnetism and Magnetic Materials, 239(1-3), 261-265. doi:10.1016/S0304-8853(01)00591-1.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-1750-8
In situ spin-resolved photoemission studies have been performed on expitaxial Fe3O4 thin films grown on MgO(1 0 0). The spin polarization of the valence band at the Fermi level has been found to be -55.5% and not -100% as predicted by the first-principles calculations. Our spin-resolved measurements provide direct experimental evidence showing that Fe3O4 is not a half-metal as a result of electron-electron correlation effects, and that Fe3O4 should be considered as a strongly correlated system. (C) 2002 Elsevier Science B.V. All rights reserved.