On the shot-noise limit of a thermal current

Details On the shot-noise limit of a thermal current On the shot-noise limit of a thermal current

2008-02-09

arxiv.org/abs/0802.1280v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1088/0953-8984/20/28/285213

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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