Abstract
Callaway model with Debye’s approximation of phonon states density is used to determine heat conductivity of some layered structures of Nb 1-x Sn x Se 2 type. In total relaxation time, a term proportional to squared frequency, typical for layered structures, is kept. Electronic heat conductivity is determined by Wiedemann–Franz law and BRT model for superconductors. In both cases, heat conductivity is determined numerically in the range of 2 – 200 K. Results correlate well with experimental data.
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