Orientation Dependent Thermal Conductance in Single-Layer MoS2
arXiv:1303.5548 · doi:10.1038/srep02209
Abstract
We investigate the thermal conductivity in the armchair and zigzag MoS nanoribbons, by combining the non-equilibrium Green's function approach and the first-principles method. A strong orientation dependence is observed in the thermal conductivity. Particularly, the thermal conductivity for the armchair MoS nanoribbon is about 673.6 WmK in the armchair nanoribbon, and 841.1 WmK in the zigzag nanoribbon at room temperature. By calculating the Caroli transmission, we disclose the underlying mechanism for this strong orientation dependence to be the fewer phonon transport channels in the armchair MoS nanoribbon in the frequency range of [150, 200] {cm}. Through the scaling of the phonon dispersion, we further illustrate that the thermal conductivity calculated for the MoS nanoribbon is esentially in consistent with the superior thermal conductivity found for graphene.
accepted by Scientific Report
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- Graphene Versus MoS2: a Short Review
- Rotationally Commensurate Growth of MoS2 on Epitaxial Graphene
- Elastic Bending Modulus of Single-Layer Molybdenum Disulphide (MoS2): Finite Thickness Effect
- Mechanical Properties of MoS2/Graphene Heterostructures
- A Review on Flexural Mode of Graphene: Lattice Dynamics, Thermal Conduction, Thermal Expansion, Elasticity, and Nanomechanical Resonance
- Thermal Conductivity of Suspended Few-Layer MoS2
- MoS2 Nanoresonators: Intrinsically Better Than Graphene?
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- Phonon Bandgap Engineering of Strained Monolayer MoS2
- Phonon Modes in Single-Walled Molybdenum Disulphide (MoS2) Nanotubes: Lattice Dynamics Calculation and Molecular Dynamics Simulation
- A Fast Uniaxial Compression of the Single-Layer MoS2