We study the low-energy electronic structure of massless and massive zigzag graphene nanoribbons and the effect due to edge and bulk model perturbations. We consider also the presence of a uniform magnetic field threading the ribbons and the induced energy splitting of the two Dirac valleys. The emergence of energy gaps and valley asymmetry enriches the perspectives of novel devices based on relativistic-like carriers.
Tailoring the single-mode electronic region in zigzag graphene nanostructures
GROSSO, GIUSEPPE;
2009-01-01
Abstract
We study the low-energy electronic structure of massless and massive zigzag graphene nanoribbons and the effect due to edge and bulk model perturbations. We consider also the presence of a uniform magnetic field threading the ribbons and the induced energy splitting of the two Dirac valleys. The emergence of energy gaps and valley asymmetry enriches the perspectives of novel devices based on relativistic-like carriers.File in questo prodotto:
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