Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 98: Graphene VI
O 98.2: Vortrag
Freitag, 18. März 2011, 11:30–11:45, WIL A317
Electronic and magnetic properties of the graphene/Fe/Ni(111) system: A theoretical study — •Elena Voloshina1, Martin Weser2, Karsten Horn2, and Yuriy Dedkov2 — 1Institut für Chemie und Biochemie, Freie Universität Berlin, 14195 Berlin, Germany — 2Fritz-Haber Institut der Max-Planck Gesellschaft, 14195 Berlin, Germany
Layers of graphene on ferromagnetic (FM) surfaces may provide an ideal spin filtering effect in FM/graphene/FM sandwich-like structures [1]. Prior to being able to implement graphene/FM system in any kind of spintronic unit, its electronic, magnetic, and interfacial properties have to be investigated. Related DFT studies of the graphene/Fe/Ni(111) trilayer system have been performed. We observed noticeable modifications of the graphene and substrate band structures in the system. Intercalation of iron underneath of graphene layer changes drastically the magnetic response from the graphene layer that is explained by the formation of the highly spin-polarized 3d quantum-well state in thin iron layer. Obtained results are compared with experimental data.
[1] V. M. Karpan et al., Phys. Rev. Lett. 99, 176602 (2007).