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arXiv · 0802.1280

On the shot-noise limit of a thermal current

Kelly R. Patton
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Abstract

The noise power spectral density of a thermal current between two macroscopic dielectric bodies held at different temperatures and connected only at a quantum point contact is calculated. Assuming the thermal energy is carried only by phonons, we model the quantum point contact as a mechanical link, having a harmonic spring potential. In the weak coupling, or weak-link limit, we find the thermal current analog of the well-known electronic shot-noise expression.

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Kelly R. Patton. 2008-02-09. On the shot-noise limit of a thermal current. https://doi.org/10.1088/0953-8984%2F20%2F28%2F285213

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