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Electronic structure of the Fe3O4(111) surface

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2004

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Vyalikh, Denis V.
Hauch, Jan O.
Molodtsov, Serguei L.
Güntherodt, Gernot

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Physical Review B. 2004, 70, 73405. Available under: doi: 10.1103/PhysRevB.70.073405

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The surface electronic band structure of thin, well-ordered epitaxial Fe3O4s(111) films has been investigated at room temperature by means of angle- resolved photoelectron spectroscopy using synchrotron radiation. In the G-M direction of the Fe3O4(111) surface Brillouin zone (SBZ), two types of dispersion states originating from a periodic multilayered structure of iron and oxygen ions, in which Fe2+ and Fe3+ cations are incorporated into the close-packed fcc oxygen sublattice, were identified. Oxygen 2p-derived states at binding energies between 2.5 and 8 eV follow a strong, monotonic dispersion extending from G to M of the oxygen-sublattice originating SBZ. On the other hand, the iron 3d-derived states near the Fermi energy show a weak dispersion with a period half of the G-M distance of the latter. The surface electronic band structure of the Fe3O4(111) film measured with photoemission is described as composed from matrix-element governed contributions of the oxygen and the iron sublattices which are related to the different symmetries of their SBZs.

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ISO 690DEDKOV, Yuriy S., Mikhail FONIN, Denis V. VYALIKH, Jan O. HAUCH, Serguei L. MOLODTSOV, Ulrich RÜDIGER, Gernot GÜNTHERODT, 2004. Electronic structure of the Fe3O4(111) surface. In: Physical Review B. 2004, 70, 73405. Available under: doi: 10.1103/PhysRevB.70.073405
BibTex
@article{Dedkov2004Elect-9115,
  year={2004},
  doi={10.1103/PhysRevB.70.073405},
  title={Electronic structure of the Fe3O4(111) surface},
  volume={70},
  journal={Physical Review B},
  author={Dedkov, Yuriy S. and Fonin, Mikhail and Vyalikh, Denis V. and Hauch, Jan O. and Molodtsov, Serguei L. and Rüdiger, Ulrich and Güntherodt, Gernot},
  note={Article Number: 73405}
}
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