Nondiffusive lattice thermal transport in Si-Ge alloy nanowires
Published in Physical Review B, 2016
In this simulation study, we present a calculation of the lattice thermal conductivity of Si-Ge nanowires. We find that phonon transport in Si-Ge nanowires is neither entirely ballistic nor diffusive; instead, it falls into an intermediate regime called superdiffusion where thermal conductivity scales with the length of the nanowire.
Thermal conductance G, as a function of length and varying diameter, roughness, and composition.
Citation: Upadhyaya M, Aksamija Z. Nondiffusive lattice thermal transport in Si-Ge alloy nanowires. Physical Review B. 2016 Nov 8;94(17):174303.