|Covid-19|Thermal conductance quantum Wikipedia
In physics, the thermal conductance quantum
describes the rate at which heat is transported through a single ballistic phonon channel. It is given by:
The thermal conductance of any electrically insulating structure that exhibits ballistic phonon transport is a positive integer multiple of
. The thermal conductance quantum was first measured in 2000. These measurements employed suspended silicon nitride nanostructures that exhibited a constant thermal conductance of 16
at temperatures below approximately 0.6 kelvin.
For ballistic electrical conductors, the electron contribution to the thermal conductance is also quantized as a result of the electrical conductance quantum and the Wiedemann–Franz law.