Effect of phonon scattering by surface roughness on the universal thermal conductance
arXiv:cond-mat/0105420 · doi:10.1103/PhysRevLett.87.115502
Abstract
The effect of phonon scattering by surface roughness on the thermal conductance in mesoscopic systems at low temperatures is calculated using full elasticity theory. The low frequency behavior of the scattering shows novel power law dependences arising from the unusual properties of the elastic modes. This leads to new predictions for the low temperature depression of the thermal conductance below the ideal universal value. Comparison with the data of Schwab et al. [Nature 404, 974 (2000)] suggests that surface roughness on a scale of the width of the thermal pathway is important in the experiment.
6 pages, 3 figures
References in corpus (2)
Cited by in corpus (14)
- Quantum thermal transport in nanostructures
- Coherent phonon scattering effects on thermal transport in thin semiconductor nanowires
- Universal features of phonon transport in nanowires with correlated surface roughness
- Surface scattering analysis of phonon transport in the quantum limit using an elastic model
- Rayleigh waves, surface disorder, and phonon localization in nanostructures
- Mesoscopic Electron and Phonon Transport through a Curved Wire
- Effects of interdot hopping and Coulomb blockade on the thermoelectric properties of serially coupled quantum dots
- Damping of mechanical vibrations by free electrons in metallic nanoresonators
- Acoustic phonon transport through a double-bend quantum waveguide
- Suppressing phonon transport in nanowires: a simple model for phonon-surface roughness interaction
- Universality of phonon transport in surface-roughness dominated nanowires
- Transmission of waves across atomic step discontinuities in discrete nanoribbon structures
- Mesoscopic Quantum Thermo-mechanics: a new frontier of experimental physics
- Thermal Transport in Phononic Cayley Tree Networks