SECOND SOUND IN SOLIDS
SECOND SOUND IN SOLIDS
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DOI：
10.1103/physrev.131.2013
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发表时间：
1963-01-01
期刊：
影响因子：
--
通讯作者：
CHESTER, M
中科院分区：
文献类型：
--
作者：
CHESTER, M
计算了热涨落的临界频率，在该频率以上，热输运通过波传播而不是扩散进行。这种现象应该发生在某些介电固体中。它是氦II中第二种声音的类似物。一个宏观的角度来看，依赖于在傅立叶热方程的修改。一些定量的结果，得到了这种修改的幅度。
A critical frequency for thermal fluctuations is calculated above which heat transport proceeds by wave propagation rather than by diffusion. This phenomenon should occur in some dielectric solids. It is the analog of second sound in helium II. A macroscopic point of view is used which relies upon a modification in the Fourier heat equation. Some quantitative results are obtained on the magnitude of this modification.