| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevLett.110.157401 |
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| Auteur | Rechercher : Pang, J.W.L.; Rechercher : Buyers, W.J.L.1; Rechercher : Chernatynskiy, A.; Rechercher : Lumsden, M.D.; Rechercher : Larson, B.C.; Rechercher : Phillpot, S.R. |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Sujet | Anharmonicities; First-principles simulations; Inelastic neutrons; Longitudinal optics; Phonon lifetimes; Phonon physics; Quantitative correspondence; Phonons; Thermal conductivity |
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| Résumé | Inelastic neutron scattering measurements of individual phonon lifetimes and dispersion at 295 and 1200 K have been used to probe anharmonicity and thermal conductivity in UO2. They show that longitudinal optic phonon modes carry the largest amount of heat, in contrast to past simulations and that the total conductivity demonstrates a quantitative correspondence between microscopic and macroscopic phonon physics. We have further performed first-principles simulations for UO2 showing semiquantitative agreement with phonon lifetimes at 295 K, but larger anharmonicity than measured at 1200 K. © 2013 American Physical Society. |
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| Date de publication | 2013 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21270584 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 3c729046-fc3a-40d5-81bb-7f9e664ab797 |
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| Enregistrement créé | 2014-02-17 |
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| Enregistrement modifié | 2020-04-22 |
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