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Phys. Rev. Lett. 81, 232–235 (1998)

Quantized Thermal Conductance of Dielectric Quantum Wires

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Luis G. C. Rego and George Kirczenow
Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6

Received 10 December 1997; published in the issue dated 6 July 1998

See accompanying Physics Focus

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 π2kB2T/3h where kB 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.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.232
DOI:
10.1103/PhysRevLett.81.232
PACS:
85.30.Vw, 63.22.+m, 73.23.Ad

See Also

Comment: A. Greiner, L. Reggiani, and T. Kuhn, Comment on “Quantized Thermal Conductance of Dielectric Quantum Wires”, Phys. Rev. Lett. 81, 5037 (1998).

Reply: Luis G. Rego and George Kirczenow, Rego and Kirczenow Reply:, Phys. Rev. Lett. 81, 5038 (1998).