Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The phonon spectra of LaCoO 3 were studied by inelastic neutron scattering in the temperature range of 4-120 K. The DFT calculations of the lattice dynamics have been made for interpretation of the experimental data. The observed and calculated phonon frequencies were found to be in a reasonable agreement. The evolution of the phonon density of states over the spin state transition was analyzed. In the low-temperature range (T < 50 K), an increase in the energy of resolved breathing, stretching, and bending phonon modes was found, followed by their softening and broadening at higher temperatures due to the spin state transition and relevant orbital-phonon coupling.
Язык оригинала | английский |
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Номер статьи | 214305 |
Журнал | Physical Review B - Condensed Matter and Materials Physics |
Том | 83 |
Номер выпуска | 21 |
DOI | |
Состояние | Опубликовано - 30 июн 2011 |
ID: 73027200