Quantum conductance of graphene nanoribbons with edge defects
arXiv:cond-mat/0609009 · doi:10.1103/PhysRevB.77.085408
Abstract
The conductance of metallic graphene nanoribbons (GNRs) with single defects and weak disorder at their edges is investigated in a tight-binding model. We find that a single edge defect will induce quasi-localized states and consequently cause zero-conductance dips. The center energies and breadths of such dips are strongly dependent on the geometry of GNRs. Armchair GNRs are much more sensitive to a vacancy than zigzag GNRs, but are less sensitive to a weak scatter. More importantly, we find that with a weak disorder, zigzag GNRs will change from metallic to semiconducting due to Anderson localization. But a weak disorder only slightly affects the conductance of armchair GNRs. The influence of edge defects on the conductance will decrease when the widths of GNRs increase.
8 pages and 11 figures
References in corpus (12)
- Electric Field Effect in Atomically Thin Carbon Films
- Energy Band Gap Engineering of Graphene Nanoribbons
- Graphene Nano-Ribbon Electronics
- Electronic States of Graphene Nanoribbons
- Unconventional Integer Quantum Hall effect in graphene
- Peculiar Width Dependence of the Electronic Property of Carbon Nanoribbons
- Edge state on hydrogen-terminated graphite edges investigated by scanning tunneling microscopy
- Effect of Disorder on Transport in Graphene
- Tunable Coulomb blockade in nanostructured graphene
- Coherent transport in graphene nanoconstrictions
- Electronic transport in locally gated graphene nanoconstrictions
- Electronic Structure of gated graphene and graphene ribbons
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