Low-temperature thermal conductivity of Li3N
| Autor: | K. Guckelsberger, A M de Goer |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Materials science
Phonon scattering Condensed matter physics Phonon General Engineering Physics::Optics General Physics and Astronomy Absolute value Dielectric Condensed Matter Physics Thermal conduction Crystal Condensed Matter::Materials Science chemistry.chemical_compound Thermal conductivity chemistry Condensed Matter::Superconductivity Lithium nitride |
| Zdroj: | Journal of Physics C: Solid State Physics. 13:L767-L771 |
| ISSN: | 0022-3719 |
| DOI: | 10.1088/0022-3719/13/28/002 |
| Popis: | The low-temperature thermal conductivity of lithium nitride (Li3N) shows a temperature dependence which is typical for a good dielectric crystal with K(T) varies as T3 below about 1.5K. Its absolute value, however, is about 2.6 times smaller than expected. A quantitative analysis shows that this extra phonon scattering may be understood in terms of two-level systems which couple to longitudinal and fast transverse phonons but not at all to slow transverse phonons. |
| Databáze: | OpenAIRE |
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