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arXiv · 1504.06956

Strain-tuning of vacancy-induced magnetism in graphene nanoribbons

Daniel Midtvedt·Alexander Croy
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Abstract

Vacancies in graphene lead to the appearance of localized electronic states with non-vanishing spin moments. Using a mean-field Hubbard model and an effective double-quantum dot description we investigate the influence of strain on localization and magnetic properties of the vacancy-induced states in semiconducting armchair nanoribbons. We find that the exchange splitting of a single vacancy and the singlet-triplet splitting for two vacancies can be widely tuned by applying uniaxial strain, which is crucial for spintronic applications.

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Daniel Midtvedt, Alexander Croy. 2015-04-27. Strain-tuning of vacancy-induced magnetism in graphene nanoribbons. https://doi.org/10.1088/0953-8984/28/4/045302

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