Is there a Lower Limit to the Thermal Conductivity of Solids?
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ABSTRACTThe thermal conductivity of various systematically disordered crystals has been measured. It has been found that the lowest thermal conductivity above ∼100 K that can be achieved is equal to that of the amorphous phase. This experimentally observed lower limit of the thermal conductivity can be described with a model proposed by Einstein in which the elastic energy propagates in a random walk among the atoms which are vibrating with random phases, and which is called the minimum thermal conductivity. This heat transport mechanism resembles somewhat that commonly accepted in liquids.
2016 ◽
Vol 53
(6)
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pp. 1873-1892
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2019 ◽
Vol 172
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pp. 603-611
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2007 ◽
Vol 73
(725)
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pp. 276-282
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2018 ◽
Vol 382
(34)
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pp. 2343-2353
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1997 ◽
Vol 06
(02)
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pp. 181-192