Effect of substrate modes on thermal transport in supported graphene

Abstract

We examine thermal transport in graphene supported on SiO2 using molecular dynamics simulations. Coupling to the substrate reduces the thermal conductivity (TC) of supported graphene by an order of magnitude, due to damping of the flexural acoustic (ZA) phonons. However, increasing the strength of the graphene-substrate interaction enhances the TC of supported graphene, contrary to expectations. The enhancement is due to the coupling of graphene ZA modes to the substrate Rayleigh waves, which linearizes the dispersion and increases the group velocity of the hybridized modes. These findings suggest that the TC of two-dimensional supported graphene is tunable through surface interactions, providing a novel possibility for controlled energy flow in nanomaterials.

20 pages, 5 figures

References in corpus (12)

• Giant Intrinsic Carrier Mobilities in Graphene and Its Bilayer
• Thermal Conductivity and Thermal Rectification in Graphene Nanoribbons: a Molecular Dynamics Study
• Mobility and Saturation Velocity in Graphene on SiO2
• Thermal conductivity of suspended pristine graphene measured by Raman spectroscopy
• Heat Conduction across Monolayer and Few-Layer Graphenes
• Thermal rectification in carbon nanotube intramolecular junctions: Molecular dynamics calculations
• Tuning the thermal conductivity of graphene nanoribbons by edge passivation and isotope engineering: a molecular dynamics study
• Manipulating thermal conductivity through substrate coupling
• Heat transfer between weakly coupled systems: Graphene on a-SiO2
• Heat conduction of single-walled carbon nanotube isotope-superlattice structures: A molecular dynamics study
• Frequency and Polarization Dependence of Thermal Coupling between Carbon Nanotubes and SiO2
• Comment on 'First principles calculation of lattice thermal conductivity in mono- and bi-layer graphene' (arXiv:0902.0642)

Cited by in corpus (55)

• Thermal properties of graphene: Fundamentals and applications
• Lattice Vibrational Modes and Phonon Thermal Conductivity of Monolayer MoS2
• Phononic thermal properties of two-dimensional materials
• Phonon Transport in Graphene
• Ballistic to diffusive crossover of heat flow in graphene ribbons
• Thermal and Thermoelectric Properties of Graphene
• Thermal Conductivity of Suspended Graphene with Defects
• Substrate Coupling Suppresses Size Dependence of Thermal Conductivity in Supported Graphene
• Low lattice thermal conductivity of stanene
• A Revisit to High Thermoelectric Performance of Single-layer MoS2
• Functionalization mediates heat transport in graphene nanoflakes
• High-Field Electrical and Thermal Transport in Suspended Graphene
• Tensile Strains Give Rise to Strong Size Effects for Thermal Conductivities of Silicene, Germanene and Stanene
• Effect of Grain Boundaries on Thermal Transport in Graphene
• A Review on Flexural Mode of Graphene: Lattice Dynamics, Thermal Conduction, Thermal Expansion, Elasticity, and Nanomechanical Resonance
• Anomalous Heat Conduction and Anomalous Diffusion in Low Dimensional Nanoscale Systems
• Spectral analysis of non-equilibrium molecular dynamics: spectral phonon temperature and phonon local non-equilibrium in thin films and across interfaces
• Mermin-Wagner theorem, flexural modes, and degraded carrier mobility in 2D crystals with broken horizontal mirror (${\sigma }_{\mathrm{h}}$) symmetry
• Flexural mode of graphene on a substrate
• Thermal and Thermoelectric Transport in Nanostructures and Low-Dimensional Systems
• Significant Reduction of Graphene Thermal Conductivity by Phononic Crystal Structure
• Reduction of Phonon Lifetimes and Thermal Conductivity of a Carbon Nanotube on Amorphous Silica
• Generalization of Fourier's law into viscous heat equations
• Unexpected large thermal rectification in asymmetric grain boundary of graphene
• Manipulating thermal conductivity through substrate coupling
• Thermal conductivity of epitaxial graphene nanoribbons on SiC: effect of substrate
• Theory of substrate-directed heat dissipation for single-layer graphene and other two-dimensional crystals
• Strain enhanced superconductivity of Mo$X_2$ ($X$=S or Se) bilayers with Na intercalation
• Reduced Thermal Conductivity of Supported and Encased Monolayer and Bilayer MoS${}_2$
• Energy dissipation in van der Waals two-dimensional devices
• Temperature dependence of the conductivity of graphene on boron nitride
• Directional excitation of graphene surface plasmons
• Flexural phonon scattering induced by electrostatic gating in graphene
• Hexagonal Boron Nitride-Graphene Heterostructures with Enhanced Interfacial Thermal Conductance for Thermal Management Applications
• Thermal engineering in low-dimensional quantum devices: a tutorial review of nonequilibrium Green's function methods
• Manipulation of heat current by the interface between graphene and white graphene
• Chemical-Vapor-Deposited Graphene as a Thermally Conducting Coating
• Low Lattice Thermal Conductivity of a Two-Dimensional Phosphorene Oxide
• Phonon heat conduction across slippery interfaces in twisted graphite
• Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review
• Irida-Graphene Phonon Thermal Transport via Non-equilibrium Molecular Dynamics Simulations
• Substrate-induced reduction of graphene thermal conductivity
• Impact of dimensional crossover on phonon transport in van der Waals materials: a case study of graphite and graphene
• Nontrivial impact of interlayer coupling on thermal conductivity: opposing trends in in-plane and out-of-plane phonons
• Geometry induced local thermal current from cold to hot in a classical harmonic system
• The classical molecular dynamics simulation of graphene on Ru(0001) using a fitted Tersoff interface potential
• Modeling Interlayer Interactions and Phonon Thermal Transport in Silicene Bilayer
• Lattice Thermal Conductivity of Sun-Graphyne from Reverse Nonequilibrium Molecular Dynamics Simulations
• Effects of Dissipation on Solitons in the Hydrodynamic Regime of Graphene
• Registry Effect on the Thermal Conductivity of Few-Layer Graphene
• Highly Fluorinated Graphene
• Size Dependence and Ballistic Limits of Thermal Transport in Anisotropic Layered Two-Dimensional Materials
• Thermal rectification in mass-asymmetric one-dimensional anharmonic oscillator lattices with and without a ballistic spacer
• Effect of external potential on the energy transport in harmonically driven segmented Frenkel-Kontorova lattices
• Tunable Interfacial Thermal Conductance in Graphene/Germanene van der Waals Heterostructure using an Optimized Interlayer Potential