Stable ferromagnetism and doping induced half-metallicity in asymmetric graphene nanoribbons

Details Stable ferromagnetism and doping induced half-metallicity in asymmetric graphene nanoribbons Stable ferromagnetism and doping induced half-metallicity in asymmetric graphene nanoribbons

2012-01-23

arxiv.org/abs/1201.4735v1

Physics

Condensed Matter

Materials Science

Scientific paper

We propose a class of graphene nanoribbons showing strong intrinsic ferromagnetic behavior due to their asymmetry. Such ribbons are based on a zig-zag edged backbone surmounted by a periodic, triangular notched region of variable size. The electronic properties as a function of the topology are investigated. Interestingly, substitutional doping by boron or nitrogen induces half-metallicity. The most effective doping sites can be inferred from the band structure. Given the present rapid development of bottom-up strategies for the synthesis of atomically precise carbon nanostructures the proposed class of nanoribbons emerges as a real candidate for spintronic applications at ambient temperature.

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