Quantized thermal conductance of dielectric quantum wires

Details Quantized thermal conductance of dielectric quantum wires Quantized thermal conductance of dielectric quantum wires

1998-01-22

arxiv.org/abs/cond-mat/9801238v2

Phys. Rev. Lett. 81, 232 (1998)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 3 ps figures, source file in Latex

Scientific paper

10.1103/PhysRevLett.81.232

Using the Landauer formulation of transport theory, we predict that dielectric quantum wires should exhibit quantized thermal conductance at low temperatures in a ballistic phonon regime. The quantum of thermal conductance is universal, independent of the characteristics of the material, and equal to $\pi^2 k^2_B T /3h$ where $k_B$ is the Boltzmann constant, h is Planck's constant and T is the temperature. Quantized thermal conductance should be experimentally observable in suspended nanostructures adiabatically coupled to reservoirs, devices that can be realized at the present time.

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