Mimicking Nanoribbon Behavior Using a Graphene Layer on SiC

Details Mimicking Nanoribbon Behavior Using a Graphene Layer on SiC Mimicking Nanoribbon Behavior Using a Graphene Layer on SiC

2010-08-18

arxiv.org/abs/1008.2998v3

Phys. Rev. B 82, 153402 (2010)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.82.153402

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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