Towards an ideal graphene-based spin-filter

Details Towards an ideal graphene-based spin-filter Towards an ideal graphene-based spin-filter

2011-02-11

arxiv.org/abs/1102.2367v1

Phys. Status Solidi RRL 5, 226 (2011)

Physics

Condensed Matter

Materials Science

13 pages, 4 figures

Scientific paper

10.1002/pssr.201105197

The Fe$_3$O$_4$(111)/graphene/Ni(111) trilayer is proposed to be used as an ideal spin-filtering sandwich where the half-metallic properties of magnetite are used. Thin magnetite layers on graphene/Ni(111) were prepared via successive oxidation of thin iron layer predeposited on graphene/Ni(111) and formed system was investigated by means of low-energy electron diffraction (LEED) and photoelectron spectroscopy (PES) of core levels as well as valence band. The electronic structure and structural quality of the graphene film sandwiched between two ferromagnetic layers remains unchanged upon magnetite formation as confirmed by LEED and PES data.

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