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Lattice distortion leads to glassy thermal transport in crystalline CsBiICl
Zezhu Zeng, Zheyong Fan, Michele Simoncelli +5
The glassy thermal conductivities observed in crystalline inorganic perovskites such as CsBiICl is perplexing and lacking theoretical explanations. Here, we first e…
Heat transport in crystalline organic semiconductors: coexistence of phonon propagation and tunneling
Lukas Legenstein, Lukas Reicht, Sandro Wieser +2
Understanding heat transport in organic semiconductors is of fundamental and practical relevance. Therefore, we study the lattice thermal conductivities of a series of (oligo)acene…
Defect-tolerant electron and defect-sensitive phonon transport in quasi-2D conjugated coordination polymers
Hio-Ieng Un, Kamil Iwanowski, Jordi Ferrer Orri +7
Thermoelectric materials, enabling direct waste-heat to electricity conversion, need to be highly electrically conducting while simultaneously thermally insulating. This is fundame…
First-principles characterization of thermal conductivity in LaPO4-based alloys
Anees Pazhedath, Lorenzo Bastonero, Nicola Marzari +1
Alloys based on lanthanum phosphate (LaPO) are often employed as thermal barrier coatings, due to their low thermal conductivity and structural stability over a wide temperat…
Temperature-invariant heat conductivity from compensating crystalline and glassy transport: from the Steinbach meteorite to furnace bricks
Michele Simoncelli, Daniele Fournier, Massimiliano Marangolo +6
The thermal conductivities of crystals and glasses vary strongly and with opposite trends upon heating, decreasing in crystals and increasing in glasses. Here, we show--both with f…