Phys. Rev. B 68, 245406 (2003) [12 pages]Phonon transport in nanowires coated with an amorphous material: An atomistic Green’s function approachSee Also: Erratum Received 31 October 2002; revised 10 September 2003; published 11 December 2003 An approach is presented for the atomistic study of phonon transport in real dielectric nanowires via Green’s functions. The formalism is applied to investigate the phonon flow through nanowires coated by an amorphous material. Examples for a simple model system and for real Si nanowires coated by silica are given. New physical results emerge for these systems, regarding the character of the transition from ballistic to diffusive transport, the low-temperature thermal conductance, and the influence of the wire-coating interface on the thermal transport. An efficient treatment of phonon scattering by the amorphous coating is also developed, representing a valuable tool for the investigation of thermal conduction through amorphous-coated nanowires. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.68.245406
DOI:
10.1103/PhysRevB.68.245406
PACS:
63.22.+m, 66.70.+f, 68.65.La
See AlsoErratum: N. Mingo and Liu Yang, Erratum: Phonon transport in nanowires coated with an amorphous material: An atomistic Green’s function approach [Phys. Rev. B 68, 245406 (2003)], Phys. Rev. B 70, 249901 (2004). |
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