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arXiv · 1201.4735

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

Donat J. Adams·Oliver Gröning·Carlo A. Pignedoli·Pascal Ruffieux·Roman Fasel·Daniele Passerone
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Abstract

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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Donat J. Adams, Oliver Gröning, Carlo A. Pignedoli, Pascal Ruffieux, Roman Fasel, Daniele Passerone. 2012-01-23. Stable ferromagnetism and doping induced half-metallicity in asymmetric graphene nanoribbons. https://arxiv.org/abs/1201.4735

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