Intrinsic decay lengths of quasimonochromatic phonons in a glass below 1 K

作者：Brage Golding, John E. Graebner, R. J. Schutz · 发表于：Physical review. B, Solid state · 年份：1976 · DOI：10.1103/physrevb.14.1660 · 被引用次数：102 · 研究领域：Glass properties and applications、Thermal properties of materials、Thermography and Photoacoustic Techniques

The temperature dependence and magnitudes of the reciprocal decay length ${l}^{\ensuremath{-}1}$ of low-intensity longitudinal and transverse phonon pulses propagating in fused silica glass between 0.02 and 0.5 K for frequencies near 0.5 GHz are reported. The temperature dependence of ${l}^{\ensuremath{-}1}$ is in good agreement with resonant scattering from two-level systems, and the magnitudes yield thermal conductivities in good agreement with published data.