Zigzag graphene nanoribbon edge reconstruction with Stone-Wales defects
arXiv:1107.4779 · doi:10.1103/PhysRevB.84.155435
Abstract
In this article, we study zigzag graphene nanoribbons with edges reconstructed with Stone-Wales defects, by means of an empirical (first-neighbor) tight-binding method, with parameters determined by ab-initio calculations of very narrow ribbons. We explore the characteristics of the electronic band structure with a focus on the nature of edge states. Edge reconstruction allows the appearance of a new type of edge states. They are dispersive, with non-zero amplitudes in both sub-lattices; furthermore, the amplitudes have two components that decrease with different decay lengths with the distance from the edge; at the Dirac points one of these lengths diverges, whereas the other remains finite, of the order of the lattice parameter. We trace this curious effect to the doubling of the unit cell along the edge, brought about by the edge reconstruction. In the presence of a magnetic field, the zero-energy Landau level is no longer degenerate with edge states as in the case of pristine zigzag ribbon.
15 pages
References in corpus (18)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Two Dimensional Atomic Crystals
- Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics
- Imaging Grains and Grain Boundaries in Single-Layer Graphene: An Atomic Patchwork Quilt
- Electronic States of Graphene Nanoribbons
- Colloquium: The transport properties of graphene: An introduction
- From Point Defects in Graphene to Two-Dimensional Amorphous Carbon
- Self-passivating edge reconstructions of graphene
- Structure, Stability, Edge States and Aromaticity of Graphene Ribbons
- Cones, pringles, and grain boundary landscapes in graphene topology
- From Graphene constrictions to single carbon chains
- Stone-Wales--type transformations in carbon nanostructures driven by electron irradiation
- Revealing the grain structure of graphene grown by chemical vapor deposition
- Transport properties of graphene with one-dimensional charge defects
- Anisotropy of the Stone-Wales Defect and Warping of Graphene Nano-ribbons: A First-principles Analysis
- Third edge for a graphene nanoribbon: A tight-binding model calculation
- Comparison of Raman spectra and vibrational density of states between graphene nanoribbons with different edges
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- Graphene quantum dots with Stone-Wales defect as a topologically tunable platform for visible-light harvesting
- Scattering by linear defects in graphene: a tight-binding approach
- Divacancy-induced Ferromagnetism in Graphene Nanoribbons
- Electronic states of zigzag graphene nanoribbons with edges reconstructed with topological defects
- Spin-filtered edge states in graphene
- Triggering one dimensional phase transition with defects at the graphene zigzag edge
- Mode mixing induced by disorder in graphene PNP junction in a magnetic field
- Effect of edge defects on band structure of zigzag graphene nanoribbons
- Graphene flakes with defective edge terminations: Universal and topological aspects, and one-dimensional quantum behavior
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- Functionalization of edge reconstructed graphene nanoribbons by H and Fe: A density functional study
- Competing edge structures of Sb and Bi bilayers by trivial and nontrivial band topologies
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