Size-dependent thermal conductivity of nanoscale semiconducting systems

Abstract

We study the size dependence of thermal conductivity in nanoscale semiconducting systems. An analytical formula including the surface scattering and the size confinement effects of phonon transport is derived. The theoretical formula gives good agreements with the existing experimental data for Si and GaAs nanowires and thin films.

arXiv commentRevtex, 3 eps figures. To appear in Phys. Rev. B

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• Modulation of Thermal Conductivity in Kinked Silicon Nanowires: Phonon Interchanging and Pinching Effects
• Crossover from ballistic to normal heat transport in the ${\varphi }^4$ lattice: If nonconservation of momentum is the reason, what is the mechanism?
• Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review
• Thermostatistics of small systems: Exact results in the microcanonical formalism
• Thermal conductivity in 1d: disorder-induced transition from anomalous to normal scaling
• Coupled elastic membranes model for quantum heat transport in semiconductor nanowires