Electronic Structures of SiC Nanoribbons

Details Electronic Structures of SiC Nanoribbons Electronic Structures of SiC Nanoribbons

2008-07-09

arxiv.org/abs/0807.1360v1

J Chem Phys, 129, 174114 (2008)

Physics

Condensed Matter

Materials Science

10 pages, 5 figures

Scientific paper

10.1063/1.3006431

Electronic structures of SiC nanoribbons have been studied by spin-polarized density functional calculations. The armchair nanoribbons are nonmagnetic semiconductor, while the zigzag nanoribbons are magnetic metal. The spin polarization in zigzag SiC nanoribbons is originated from the unpaired electrons localized on the ribbon edges. Interestingly, the zigzag nanoribbons narrower than $\sim$4 nm present half-metallic behavior. Without the aid of external field or chemical modification, the metal-free half-metallicity predicted for narrow SiC zigzag nanoribbons opens a facile way for nanomaterial spintronics applications.

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