Fig. 5
Normalized thermal conductance of nanowires. The thermal conductance of the nanowires KNW is normalized to N times the quantum of thermal conductance Gq, N being the number of channels. This value is obtained from the thermal conductance of the one and two nanowires shown in Fig. 3a divided by the universal quantum of thermal conductance times four channels for 1 NW and eight channels for 2 NWs. As in Fig. 3, red (black) markers are data collected heating from right to left (left to right). At low enough temperature (below a few kelvin), KNW/NGq can be considered as equal to the Landauer transmission coefficient \({\cal T}\) as calculated in Eqs. (1) and (2)
