| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevLett.110.157401 |
|---|
| Author | Search for: Pang, J.W.L.; Search for: Buyers, W.J.L.1; Search for: Chernatynskiy, A.; Search for: Lumsden, M.D.; Search for: Larson, B.C.; Search for: Phillpot, S.R. |
|---|
| Affiliation | - National Research Council of Canada
|
|---|
| Format | Text, Article |
|---|
| Subject | Anharmonicities; First-principles simulations; Inelastic neutrons; Longitudinal optics; Phonon lifetimes; Phonon physics; Quantitative correspondence; Phonons; Thermal conductivity |
|---|
| Abstract | 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. |
|---|
| Publication date | 2013 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 21270584 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 3c729046-fc3a-40d5-81bb-7f9e664ab797 |
|---|
| Record created | 2014-02-17 |
|---|
| Record modified | 2020-04-22 |
|---|
