Low-temperature heat transfer in nanowires

Abstract

The new regime of low-temperature heat transfer in suspended nanowires is predicted. It takes place when (i) only ``acoustic'' phonon modes of the wire are thermally populated and (ii) phonons are subject to the effective elastic scattering. Qualitatively, the main peculiarities of heat transfer originate due to appearance of the flexural modes with high density of states in the wire phonon spectrum. They give rise to the $T^{1/2}$ temperature dependence of the wire thermal conductance. The experimental situations where the new regime is likely to be detected are discussed.

RevTex file, 1 PS figure

References in corpus (4)

• Quantized thermal conductance of dielectric quantum wires
• Heat Transport in Mesoscopic Systems
• Quantum energy flow in mesoscopic dielectric structures
• Yoctocalorimetry: phonon counting in nanostructures

Cited by in corpus (9)

• Heating in current carrying molecular junctions
• Quantized Thermal Conductance of Nanowires at Room Temperature due to Surface Phonon-Polaritons
• Mesoscopic Electron and Phonon Transport through a Curved Wire
• Suppressing phonon transport in nanowires: a simple model for phonon-surface roughness interaction
• Heat capacity of suspended phonon cavities
• Universality of phonon transport in surface-roughness dominated nanowires
• On the low-temperature lattice thermal transport in nanowires
• Robust Modeling of Acoustic Phonon Transmission in Nanomechanical Structures
• Lattice dynamics of endotaxial silicide nanowires