On the thermal conductivity of dielectric crystals in the millidegree regime
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In the millidegree regime, where thermal phonon wavelengths can greatly exceed the characteristic scale of surface roughness, thermal phonon scattering off boundaries will be nearly specular. Because of the enhanced phonon mean free path, the thermal conductivity is significantly increased. The amount of this increase depends greatly on the nature of the surface roughness. 1975.
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Physics Letters A: General Physics, Nonlinear Science, Statistical Physics, Atomic, Molecular and Cluster Physics, Plasma and Fluid Physics, Condensed Matter, Cross-disciplinary Physics, Biological Physics, Nanosciences, Quantum Physics Journal