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arXiv · 1011.6014

Functionalized Graphene for High Performance Two-dimensional Spintronics Devices

Linze Li·Rui Qin·Hong Li·Lili Yu·Qihang Liu·Guangfu Luo·Jing Lu·Zhengxiang Gao
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Abstract

Using first-principles calculations, we explore the possibility of functionalized graphene as 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 85% at finite bias. The ground state of graphene semi-functionalized with F in the chair conformation is an antiferromagnetic semiconductor, and we construct a magnetoresistive device from it by introducing a magnetic field to stabilize its ferromagnetic metallic state. The resulting room-temperature magnetoresistance is up to 5400%, which is one order of magnitude larger than the available experimental values.

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Linze Li, Rui Qin, Hong Li, Lili Yu, Qihang Liu, Guangfu Luo, Jing Lu, Zhengxiang Gao. 2010-12-12. Functionalized Graphene for High Performance Two-dimensional Spintronics Devices. https://arxiv.org/abs/1011.6014

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