The Interlayer Shear Modes in Twisted Multi-layer Graphenes: Interlayer coupling, Davydov Splitting and Intensity Resonance
arXiv:1408.6017 · doi:10.1038/ncomms6309
Abstract
Graphene and other two-dimensional crystals can be combined to form various hybrids and heterostructures, creating materials on demand, in which the interlayer coupling at the interface leads to modified physical properties as compared to their constituents. Here, by measuring Raman spectra of shear modes, we probe the coupling at the interface between two artificially-stacked few-layer graphenes rotated with respect to each other. The strength of interlayer coupling between the two interface layers is found to be only 20% of that between Bernal-stacked layers. Nevertheless, this weak coupling manifests itself in a Davydov splitting of the shear mode frequencies in systems consisting of two equivalent graphene multilayers, and in the intensity enhancement of shear modes due to the optical resonance with several optically allowed electronic transitions between conduction and valence bands in the band structures. This study paves way for fundamental understanding into the interface coupling of two-dimensional hybrids and heterostructures.
9 pages, 5 figures, Accepted by Nature Communications
References in corpus (16)
- Electric Field Effect in Atomically Thin Carbon Films
- The Raman Fingerprint of Graphene
- Two Dimensional Atomic Crystals
- Uniaxial Strain in Graphene by Raman Spectroscopy: G peak splitting, Gruneisen Parameters and Sample Orientation
- Rayleigh Imaging of Graphene and Graphene Layers
- Theory of double-resonant Raman spectra in graphene: intensity and line shape of defect-induced and two-phonon bands
- Phonon Linewidths and Electron Phonon Coupling in Nanotubes
- Numerical studies of confined states in rotated bilayers of graphene
- Ab initio GW many-body effects in graphene
- Reduction of Fermi velocity in folded graphene observed by resonance Raman spectroscopy
- Observation of out-of-plane vibrations in few-layer graphene
- Resonant Low Frequency Interlayer Shear Modes in Folded Graphene Layers
- Electronic Properties of Twisted Trilayer Graphene
- Temperature-activated layer-breathing vibrations in few-layer graphene
- Layer number determination in graphene using out-of-plane vibrations
- The ultra-low-frequency shear modes of 2-4 layer graphenes observed in their scroll structures at edges
Cited by in corpus (38)
- Phonon and Raman scattering of two-dimensional transition metal dichalcogenides from monolayer, multilayer to bulk material
- Electronic properties of graphene-based bilayer systems
- Interlayer electronic hybridization leads to exceptional thickness-dependent vibrational properties in few-layer black phosphorus
- Interlayer Interactions in Anisotropic Atomically-thin Rhenium Diselenide
- Resonance effects in the Raman scattering of mono- and few layers MoSe
- Interface coupling in twisted multilayer graphene by resonant Raman spectroscopy of layer breathing modes
- Polytypism and Unexpected Strong Interlayer Coupling of two-Dimensional Layered ReS2
- InSe: a two-dimensional material with strong interlayer coupling
- Strain-shear coupling in bilayer MoS2
- Raman fingerprints of atomically precise graphene nanoribbons
- Physical origin of Davydov splitting and resonant Raman spectroscopy of Davydov components in multilayer MoTe2
- Monolayer Molybdenum Disulfide Nanoribbons with High Optical Anisotropy
- Twistronics: A turning point in 2D quantum materials
- Electronic and Vibrational Properties of PbI 2 : From Bulk to Monolayer
- θ-Tunable Photoluminescence from Interlayer Excitons in Twisted Bilayer Graphene
- Stacking-Dependent Interlayer Phonons in 3R and 2H MoS
- Coherent anti-Stokes Raman Spectroscopy of single and multi-layer graphene
- Strain Mapping In Single-Layer 2D Crystals Via Raman Activity
- Observation of forbidden phonons and dark excitons by resonance Raman scattering in few-layer WS
- Substrate-free layer-number identification of two-dimensional materials: A case of MoWS alloy
- Shear and breathing modes of layered materials
- Interlayer Coupling in Two-Dimensional Semiconductor Materials
- Growth and Raman spectroscopy of thickness-controlled rotationally faulted multilayer graphene
- Simultaneous Generation of Direct- and Indirect-Gap Photoluminescence in Multilayer MoS2 Bubbles
- Raman spectroscopic characterization of stacking configuration and interlayer coupling of twisted multilayer graphene grown by chemical vapor deposition
- Low-energy moiré phonons in twisted bilayer van der Waals heterostructures
- Electronic conductance of twisted bilayer nanoribbon flakes
- Electronic Raman Scattering in Twistronic Few-Layer Graphene
- Moiré Flat Bands of Twisted Few-layer Graphite
- Layer breathing and shear modes in multilayer graphene: A DFT-vdW study
- Probing the bright exciton state in twisted bilayer graphene via resonant Raman scattering
- Analysis of Side-band Inequivalence
- Plasmonic nanocavity-enabled universal detection of layer-breathing vibrations in two-dimensional materials
- Linear Dichroism Conversion in Quasi One-Dimensional Perovskite Chalcogenide
- Micro-tip manipulated origami for robust twisted few-layer graphene
- Perpendicular electronic transport and moiré-induced resonance in twisted interfaces of three-dimensional graphite
- Small bandgap features achieved in atomically precise 17-atom-wide armchair-edged graphene nanoribbons
- Electronic properties of twisted multilayer graphene