Electronic and optical properties of graphene nanoribbons in external fields

Abstract

A review work is done for electronic and optical properties of graphene nanoribbons in magnetic, electric, composite, and modulated fields. Effects due to the lateral confinement, curvature, stacking, non-uniform subsystems and hybrid structures are taken into account. The special electronic properties, induced by complex competitions between external fields and geometric structures, include many one-dimensional parabolic subbands, standing waves, peculiar edge-localized states, width- and field-dependent energy gaps, magnetic-quantized quasi-Landau levels, curvature-induced oscillating Landau subbands, crossings and anti-crossings of quasi-Landau levels, coexistence and combination of energy spectra in layered structures, and various peak structures in the density of states. There exist diverse absorption spectra and different selection rules, covering edge-dependent selection rules, magneto-optical selection rule, splitting of the Landau absorption peaks, intragroup and intergroup Landau transitions, as well as coexistence of monolayer-like and bilayer-like Landau absorption spectra. Detailed comparisons are made between the theoretical calculations and experimental measurements. The predicted results, the parabolic subbands, edge-localized states, gap opening and modulation, and spatial distribution of Landau subbands, have been verified by various experimental measurements.

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Cited by in corpus (18)

• Tunable light trapping and absorption enhancement with graphene ring arrays
• Electro-optical properties of phosphorene quantum dots
• Optical selection rules of zigzag graphene nanoribbons
• Two-dimensional Dirac particles in a Pöschl-Teller waveguide
• Field-created diverse quantizations in phosphorenes
• Ferrimagnetic and antiferromagnetic phase in bilayer graphene nanoflake controlled with external electric fields
• Magnetoplasmons in monolayer black phosphorus structures
• Magnetoelectronic and optical properties of nonuniform graphene nanoribbons
• Influence of electric and magnetic fields and $\sigma$-edge bands on the electronic and optical spectra of graphene nanoribbons
• Guided modes and terahertz transitions for two-dimensional Dirac fermions in a smooth double-well potential
• Stacking-configuration-enriched essential properties in bilayer silicenes
• Landau quantization in buckled monolayer GaAs
• Triaxially strained suspended graphene for large-area pseudo-magnetic fields
• Density of states and differential entropy in Dirac materials in crossed magnetic and in-plane electric fields
• Gate-Tunable Optical Extinction of Graphene Nanoribbon Nanoclusters
• Electron and hole lifetime in monolayer graphene
• Na-intercalation compounds and Na-ion batteries
• Decoration of graphene nanoribbons by $5d$ transition-metal elements