Manipulation of magnetic anisotropy of Fe/graphene by charge injection

We propose that charge injection can be used to tune the magnetic anisotropy of transition metal monolayer adsorbed on graphene substrate. Using relativistic density-functional calculations, we calculate magnetocrystalline anisotropy energy (MAE) of freestanding Fe monolayer and Fe/graphene complex...

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Bibliographic Details
Published in:Applied physics letters 2012-03, Vol.100 (12), p.122410-122410-3
Main Authors: Gong, S. J., Duan, Chun-Gang, Zhu, Zi-Qiang, Chu, Jun-Hao
Format: Article
Language:English
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Summary:We propose that charge injection can be used to tune the magnetic anisotropy of transition metal monolayer adsorbed on graphene substrate. Using relativistic density-functional calculations, we calculate magnetocrystalline anisotropy energy (MAE) of freestanding Fe monolayer and Fe/graphene complex system. We find MAE of Fe atom is drastically changed, from meV/atom in freestanding Fe monolayer to μ eV/atom in Fe/graphene system. The more interesting finding is, through charge injection, the suppressed MAE of Fe atoms in Fe/graphene system can be restored back, which provides an effective approach to control MAE. We expect such strategy would be beneficial to graphene based spintronic devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3697627