Journal
PHYSICAL REVIEW B
Volume 73, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.73.045432
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Nanoribbons (nanographite ribbons) are carbon systems analogous to carbon nanotubes. We characterize a wide class of nanoribbons by a set of two integers < p,q >, and then define the width w in terms of p and q. Electronic properties are explored for this class of nanoribbons. Zigzag (armchair) nanoribbons have similar electronic properties to armchair (zigzag) nanotubes. The band gap structure of nanoribbons exhibits a valley structure with streamlike sequences of metallic or almost metallic nanoribbons. These sequences correspond to equiwidth curves indexed by w. We reveal a peculiar dependence of the electronic property of nanoribbons on the width w.
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