Stable ferromagnetism and doping induced half-metallicity in asymmetric graphene nanoribbons
Materials Science
2012-01-24 v1
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.
Keywords
Cite
@article{arxiv.1201.4735,
title = {Stable ferromagnetism and doping induced half-metallicity in asymmetric graphene nanoribbons},
author = {Donat J. Adams and Oliver Gröning and Carlo A. Pignedoli and Pascal Ruffieux and Roman Fasel and Daniele Passerone},
journal= {arXiv preprint arXiv:1201.4735},
year = {2012}
}