Phonons in silver gallium diselenide
| Autor: | Patrick Derollez, R. Fouret, Jesus Gonzalez, A Laamyem, Bernard Hennion |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Journal of Physics: Condensed Matter. 9:6579-6589 |
| ISSN: | 1361-648X 0953-8984 |
| DOI: | 10.1088/0953-8984/9/31/011 |
| Popis: | The dispersion curves along the directions [100] and [001] of have been measured by inelastic neutron scattering. The results are analysed with different rigid-ion models: Born - von Karman and valence force field models, which give a good agreement with experiments. Additional measurements of the acoustical branches allow us to determine elastic stiffness constants which are () , , , , , . The compressibility calculated from these constants is in accordance with the experimental value. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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