Edge chirality determination of graphene by Raman spectroscopy

Abstract

Raman imaging on the edges of single layer micromechanical cleavage graphene (MCG) was carried out. The intensity of disorder-induced Raman feature (D band at ~1350 cm-1) was found to be correlated to the edge chirality: it is stronger at the armchair edge and weaker at the zigzag edge. This shows that Raman spectroscopy is a reliable and practical method to identify the chirality of graphene edge and to help in determination of the crystal orientation. The determination of graphene chirality is critically important for fundamental study as well as for applications.

14 pages, 3 figures, 1 table

References in corpus (12)

• Electric Field Effect in Atomically Thin Carbon Films
• The Raman Fingerprint of Graphene
• Ultrahigh electron mobility in suspended graphene
• Energy Band Gap Engineering of Graphene Nanoribbons
• Energy Gaps in Graphene Nanoribbons
• Half-Metallic Graphene Nanoribbons
• Atomic Structure of Graphene on SiO2
• Temperature dependent transport in suspended graphene
• Raman spectroscopy of epitaxial graphene on a SiC substrate
• Interference enhancement of Raman signal of graphene
• Electronic transport in locally gated graphene nanoconstrictions
• Graphene based superconducting quantum point contacts

Cited by in corpus (20)

• Uniaxial Strain in Graphene by Raman Spectroscopy: G peak splitting, Gruneisen Parameters and Sample Orientation
• Twist-controlled resonant tunnelling in graphene-boron nitride-graphene heterostructures
• Clar's Theory, STM Images, and Geometry of Graphene Nanoribbons
• Raman Signature and Phonon Dispersion of Atomically Thin Boron Nitride
• Graphene nanoribbons from unzipped carbon nanotubes: atomic structures, Raman spectroscopy and electrical properties
• Boundary problems for Dirac electrons and edge-assisted Raman scattering in graphene
• Raman spectroscopy at the edges of multilayer graphene
• Scanning Raman spectroscopy of graphene antidot lattices: Evidence for systematic p-type doping
• The origin of Raman D Band: Bonding and Antibonding Orbitals in Graphene
• Kohn Anomalies in Graphene Nanoribbons
• Twist-angle tunable spin texture in WSe${}_2$/graphene van der Waals heterostructures
• High-Temperature Quantum Valley Hall Effect with Quantized Resistance and a Topological Switch
• Polarization Dependence of Raman Spectra in Strained Graphene
• Specular electron focusing between gate-defined quantum point contacts in bilayer graphene
• Deterministic fabrication of graphene hexagonal boron nitride moiré superlattices
• Characterization of Hydrogen Plasma Defined Graphene Edges
• Aggregation of ferromagnetic and paramagnetic atoms at edges of graphenes and graphite
• Direct microscopic evidence of shear induced graphitization of ultrananocrystalline diamond films
• The interplay of ferroelectricity and magneto-transport in non-magnetic moiré superlattices
• Hexagonal boron nitride/bilayer graphene moiré superlattices in the Dirac-material family: energy-band engineering and carrier doping by dual gating