Hopping Processes Explain T-linear Rise of Thermal Conductivity in Thermoelectric Clathrates above the Plateau

Qing Xi, Zhongwei Zhang, Jie Chen +3

Type-I clathrate compounds with off-center guest ions realize the phonon-glass electron-crystal concept by exhibiting almost identical lattice thermal conductivities ${\kappa }_{\mathrm{L}}$ to…