Surface roughness and thermal conductivity of semiconductor nanowires: Going below the Casimir limit
Surface roughness and thermal conductivity of semiconductor nanowires: Going below the Casimir limit
By explicitly considering surface roughness at the atomic level, we quantitatively show that the thermal conductivity of Si nanowires can be lower than Casimir's classical limit. However, this violation only occurs for deep surface degradation. For shallow surface roughness, the Casimir formula is shown to yield a good approximation to …