Using first-principles calculations, we explore the possibility of functionalized graphene as a high-performance two-dimensional spintronics device. Graphene functionalized with O on one side and H on the other side in the chair conformation is found to be a ferromagnetic metal with a spin-filter efficiency up to 54% at finite bias. The ground state of graphene semifunctionalized with F in the chair conformation is an antiferromagnetic semiconductor, and we construct a spin-valve device from it by introducing a magnetic field to stabilize its metallic ferromagnetic state. The resulting room-temperature magnetoresistance is up to 2200%, which is 1 order of magnitude larger than the available experimental values. © 2011 American Chemical Society.
CITATION STYLE
Li, L., Qin, R., Li, H., Yu, L., Liu, Q., Luo, G., … Lu, J. (2011). Functionalized graphene for high-performance two-dimensional spintronics devices. ACS Nano, 5(4), 2601–2610. https://doi.org/10.1021/nn102492g
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