Thermal conductivity of amorphous solids above the plateau

David G. Cahill, R. O. Pohl

Research output: Contribution to journalArticlepeer-review

Abstract

We have measured the thermal conductivity of polymethylmethacrylate (PMMA), amorphous As2S3, Ca-K nitrate glass, three SiO2-based glasses, and glycerol in the temperature range 30 300 K, using an ac technique that eliminates errors from blackbody radiation. This technique and the problems of blackbody radiation in thermal measurements are discussed in detail. Our data do not support a recent prediction of heat transport by fractons. Instead, we find that the thermal conductivity of these glasses above 1/450 K is well described by the minimum thermal conductivity suggested by Slack.

Original languageEnglish (US)
Pages (from-to)4067-4073
Number of pages7
JournalPhysical Review B
Volume35
Issue number8
DOIs
StatePublished - Jan 1 1987
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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