Confinement of massless Dirac fermions in the graphene matrix induced by the B/N heteroatoms

Publication Type:
Journal Article
Citation:
Physical Chemistry Chemical Physics, 2015, 17 (8), pp. 5586 - 5593
Issue Date:
2015-01-01
Metrics:
Full metadata record
Files in This Item:
Filename Description Size
c4cp05193a.pdfPublished Version3.65 MB
Adobe PDF
© the Owner Societies 2015. In this work, the systems are constructed with the defect lines of B-B or N-N dimers embedded in a graphene matrix using density functional theory. It is found that the Dirac-cone dispersions appear at the Fermi level in the bands introduced by the B or N heteroatom, linear B-B or N-N dimers, demonstrating that the carrier mobility is ∼ 106m s-1which is comparable with that of the pristine graphene. Most importantly, such dimer lines act as the quasi-1-D conducting nanowires whose charge carriers are confined around the linear defects in these dimers while the charge carriers in pristine graphene are dispersed two-dimensionally. Such systems suggest that heteroatoms in graphene can indeed contribute to the Dirac cone. In addition, the type of carriers (p-type or n-type) can be manipulated using the B or N heteroatoms, respectively. This will greatly enrich the electronic properties of Dirac semimetals.
Please use this identifier to cite or link to this item: