Phonon-Phonon Interactions in Strongly Bonded Solids: Selection Rules and Higher-Order Processes
We show that the commonly used lowest-order theory of phonon-phonon interactions frequently fails to accurately describe the anharmonic phonon decay rates and thermal conductivity (κ), even among strongly bonded crystals. Applying a first-principles theory that includes both the lowest-order three-p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-06-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.10.021063 |