title: Electronic properties of four typical zigzag-edged graphyne nanoribbons.
abstract: The subband structures and edge magnetism of α-, β-, γ- and (6, 6, 12)-graphyne nanoribbons with zigzag edges are studied by means of ab initio calculations. Dispersionless subbands and antiparallel edge magnetic ordering occur in these nanostructures, just like in zigzag-edged graphene nanoribbons. More importantly, a very simple tight-binding model is established which can accurately describe the subband structures of these ribbons. From such a model we find that β-graphyne nanoribbon has many more transport modes than other graphyne and graphene nanoribbons, hence it can carry a much larger current. Such a tight-binding model provides a simple but effective way to study further the transport and optical properties of these graphyne nanoribbons.
authors.affiliation: National Laboratory of Superhard Materials, Department of Physics, Jilin University, Changchun 130012, People's Republic of China.
authors.forename: Guodong
authors.initials: G
authors.lastname: Yu
authors.forename: Zhe
authors.initials: Z
authors.lastname: Liu
authors.forename: Wenzhu
authors.initials: W
authors.lastname: Gao
authors.forename: Yisong
authors.initials: Y
authors.lastname: Zheng