Thermal conductivity of systems with a gap in the phonon spectrum*

Project supported by the Ural Branch of the Russian Academy of Sciences, Russia (Grant No. 18-2-2-12), the Russian Foundation for Basic Research, Russia (Grant Nos. 16-07-00529 and 18-07-00191), and the Financing Program, Russia (Grant No. AAAA-A16-116021010082-8).

Salamatov E
       

(color online) The thermal conductivity for different values of the position and the width of the gap. The line numbers correspond to calculations with the same parameters as that in Fig. 1.