Thermal conductance of graphene and dimerite

Abstract

We investigate the phonon thermal conductance of graphene regarding the graphene sheet as the large-width limit of graphene strips in the ballistic limit. We find that the thermal conductance depends weakly on the direction angle $\theta$ of the thermal flux periodically with period $\pi /3$. It is further shown that the nature of this directional dependence is the directional dependence of group velocities of the phonon modes in the graphene, originating from the $D_{6h}$ symmetry in the honeycomb structure. By breaking the $D_{6h}$ symmetry in graphene, we see more obvious anisotropic effect in the thermal conductance as demonstrated by dimerite.

enlarged version, in PRB

References in corpus (9)

• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Room-Temperature Quantum Hall Effect in Graphene
• Graphene-Based Liquid Crystal Device
• Quantized thermal conductance of dielectric quantum wires
• Quantum thermal transport in nanostructures
• Tunable Graphene Single Electron Transistor
• Carbon Nanotube Thermal Transport: Ballistic to Diffusive
• Raman and Infra-red properties and layer dependence of the phonon dispersions in multi-layered graphene
• Characteristics of phonon transmission across epitaxial interfaces: a lattice dynamic study

Cited by in corpus (23)

• Thermal Properties of Graphene, Carbon Nanotubes and Nanostructured Carbon Materials
• Molecular Dynamics Simulations of Single-Layer Molybdenum Disulphide (MoS2): Stillinger-Weber Parametrization, Mechanical Properties, and Thermal Conductivity
• Phonon Transport in Graphene
• Graphene Versus MoS2: a Short Review
• Thermal transport in nanostructures
• Thermoelectric properties of finite graphene antidot lattices
• Effect of Grain Boundaries on Thermal Transport in Graphene
• First-principles study of heat transport properties of graphene nanoribbons
• A Review on Flexural Mode of Graphene: Lattice Dynamics, Thermal Conduction, Thermal Expansion, Elasticity, and Nanomechanical Resonance
• How Does Folding Modulate Thermal Conductivity of Graphene
• Orientation Dependent Thermal Conductance in Single-Layer MoS2
• Thermal Conduction in Single-Layer Black Phosphorus: Highly Anisotropic?
• Quantifying the Stacking Registry Matching in Layered Materials
• Diffusive nature of thermal transport in stanene
• Phonon transport in single-layer Boron nanoribbons
• Superior thermal conductivity and extremely high mechanical strength in polyethylene chains from {\it ab initio} calculation
• Thermal transport in semiconductor nanostructures, graphene and related two-dimensional materials
• Topological effect on thermal conductivity in graphene
• Spin and charge thermopower effects in the ferromagnetic graphene junction
• Dimensional crossover of thermal conductance in graphene nanoribbons: A first-principles approach
• Registry Effect on the Thermal Conductivity of Few-Layer Graphene
• First-principle validation of Fourier's law in d=1,2,3 classical systems
• Phonon mode splitting and phonon anomaly in multiband electron systems