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arXiv · cond-mat/0701334

Photon heat transport in low-dimensional nanostructures

Teemu Ojanen·Tero T. Heikkila
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Abstract

At low temperatures when the phonon modes are effectively frozen, photon transport is the dominating mechanism of thermal relaxation in metallic systems. Starting from a microscopic many-body Hamiltonian, we develop a nonequilibrium Green's function method to study energy transport by photons in nanostructures. A formally exact expression for the energy current between a metallic island and a one-dimensional electromagnetic field is obtained. From this expression we derive the quantized thermal conductance as well as show how the results can be generalized to nonequilibrium situations. Generally, the frequency-dependent current noise of the island electrons determines the energy transfer rate.

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Teemu Ojanen, Tero T. Heikkila. 2007-08-02. Photon heat transport in low-dimensional nanostructures. https://doi.org/10.1103/physrevb.76.073414

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