| Автор | Y Yacoby |
| Автор | R A Cowley |
| Автор | T J Hosea |
| Автор | D J Lockwood |
| Автор | W Taylor |
| Дата выпуска | 1978-12-24 |
| dc.description | The Raman scattering of light from the ferroelectric fluctuations of the uniaxial ferroelectric lead germanate is analysed and found to be well described by models for which the self-energy has appreciable dispersion at frequencies comparable with the soft-mode linewidth. A model is developed to calculate the self-energy arising from phonon-density fluctuations of the modes belonging to the same branch. The model shows that this contribution to the self-energy of the soft mode is particularly large if the modes with which it is interacting are overdamped. In detail, however, the model suggests that close to T<sub>c</sub> there is an appreciable contribution to the Raman scattering from the interference terms between the one- and two-phonon scattering. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Raman scattering at structural phase transitions |
| Тип | paper |
| DOI | 10.1088/0022-3719/11/24/034 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 11 |
| Первая страница | 5065 |
| Последняя страница | 5077 |
| Аффилиация | Y Yacoby; Dept. of Phys., Univ. of Edinburgh, Edinburgh, UK |
| Аффилиация | R A Cowley; Dept. of Phys., Univ. of Edinburgh, Edinburgh, UK |
| Аффилиация | T J Hosea; Dept. of Phys., Univ. of Edinburgh, Edinburgh, UK |
| Аффилиация | D J Lockwood; Dept. of Phys., Univ. of Edinburgh, Edinburgh, UK |
| Аффилиация | W Taylor; Dept. of Phys., Univ. of Edinburgh, Edinburgh, UK |
| Выпуск | 24 |
