Low-temperature heat transfer in nanowires

Details Low-temperature heat transfer in nanowires Low-temperature heat transfer in nanowires

2000-10-21

arxiv.org/abs/cond-mat/0010332v2

B.A. Glavin. Low-temperature heat transfer in nanowires. Phys. Rev. Lett., 2001, vol. 86, N 19, pp.4318-4321

Physics

Condensed Matter

Materials Science

RevTex file, 1 PS figure

Scientific paper

10.1103/PhysRevLett.86.4318

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.

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