[HTML][HTML] An anisotropic model for the minimum thermal conductivity
The Cahill-Pohl/Einstein model of minimum phonon thermal conductivity ( κ min), which
assumes isotropic material properties, is widely successful as the lower limit for fully dense
amorphous and disordered materials. However, measurements of disordered highly
anisotropic layered WSe 2 [Chiritescu et al., Science 315, 351 (2007)] fall below the isotropic
κ min limit by at least a factor of four. Here, we generalize the isotropic κ min to be
anisotropic, suitable for both layered and chain-like materials with any anisotropy ratio. We …
assumes isotropic material properties, is widely successful as the lower limit for fully dense
amorphous and disordered materials. However, measurements of disordered highly
anisotropic layered WSe 2 [Chiritescu et al., Science 315, 351 (2007)] fall below the isotropic
κ min limit by at least a factor of four. Here, we generalize the isotropic κ min to be
anisotropic, suitable for both layered and chain-like materials with any anisotropy ratio. We …
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