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arXiv · 1008.2998

Mimicking Nanoribbon Behavior Using a Graphene Layer on SiC

Matheus P. Lima·A. R. Rocha·Antônio J. R. da Silva·A. Fazzio
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Abstract

We propose a natural way to create quantum-confined regions in graphene in a system that allows large-scale device integration. We show, using first-principles calculations, that a single graphene layer on a trenched region of $[000\bar{1}]$ $SiC$ mimics i)the energy bands around the Fermi level and ii) the magnetic properties of free-standing graphene nanoribbons. Depending on the trench direction, either zigzag or armchair nanoribbons are mimicked. This behavior occurs because a single graphene layer over a $SiC$ surface loses the graphene-like properties, which are restored solely over the trenches, providing in this way a confined strip region.

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Matheus P. Lima, A. R. Rocha, Antônio J. R. da Silva, A. Fazzio. 2010-10-07. Mimicking Nanoribbon Behavior Using a Graphene Layer on SiC. https://doi.org/10.1103/physrevb.82.153402

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