Thermal conductance quantum

In physics, the thermal conductance quantum g 0 {\displaystyle g_{0}} describes the rate at which heat is transported through a single ballistic phonon channel with temperature T {\displaystyle T} . It is given by g 0 = π 2 k B 2 T 3 h ≈ ( 9.464 × 10 − 13 W / K 2 ) T {\displaystyle g_{0}={\frac {\pi ^{2}{k_{\rm {B}}}^{2}T}{3h}}\approx (9.464\times 10^{-13}{\rm {W/K}}^{2})\;T} .