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Updated: Jun 6, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
Published on: February 1, 2022
Graphene spintronics: the role of ferromagnetic electrodes
Jesse Maassen1, Wei Ji, Hong Guo
1Centre for the Physics of Materials and Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada. maassenj@physics.mcgill.ca
Abstract:
We report a first principles study of spin transport under finite bias through a graphene-ferromagnet (FM) interface, where FM = Co(111), Ni(111). The use of Co and Ni electrodes achieves spin efficiencies reaching 80% and 60%, respectively. This large spin filtering results from the materials specific interaction between graphene and the FM which destroys the linear dispersion relation of the graphene bands and leads to an opening of spin-dependent energy gaps of ≈0.4-0.5 eV at the K points. The minority spin band gap resides higher in energy than the majority spin band gap located near E(F), a feature that results in large minority spin dominated currents.
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