Two-channel model for ultralow thermal conductivity of crystalline Tl3VSe4

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Science  29 Jun 2018:
Vol. 360, Issue 6396, pp. 1455-1458
DOI: 10.1126/science.aar8072

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Glass-like and crystal-like

Crystals with glass-like ultralow thermal conductivity are appealing as barrier coatings and thermoelectric materials. Mukhopadhyay et al. developed a class of thallium selenides with glass-like thermal conductivity. These materials may be promising for applications, but they also require the combination of glass-like and crystal-like thermal transport to explain their thermal properties. This two-channel model can be used to identify potential ultralow-thermal-conductivity compounds.

Science, this issue p. 1455