| Автор | W M Hartmann |
| Автор | R J Elliott |
| Дата выпуска | 1967-05-01 |
| dc.description | A simple shell model theory is developed in terms of the double-time Green function method to calculate the one-phonon infra-red absorption in a monatomic crystal with a small concentration of uncharged point defects. The theory allows for a defect change in atomic mass, change in core and shell charge, and change in internal core-shell force constant. The frequency-dependent absorption is found in terms of a one-phonon density of states; the integrated optical absorption is expressed in a closed form similar to that found by Doniach and Huggins. Fitting the theoretical parameters to data for krypton and xenon defects in solid argon results in a theoretical absorption of the order of magnitude found experimentally by Jones and Woodfine. Anharmonic effects in the experiments are thought to account for the principal discrepancies between theory and experiment. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Theory of one-phonon impurity-induced infra-red absorption in rare-gas solids |
| Тип | paper |
| DOI | 10.1088/0370-1328/91/1/327 |
| Print ISSN | 0370-1328 |
| Журнал | Proceedings of the Physical Society |
| Том | 91 |
| Первая страница | 187 |
| Последняя страница | 198 |
| Аффилиация | W M Hartmann; Department of Theoretical Physics, Oxford University |
| Аффилиация | R J Elliott; Department of Theoretical Physics, Oxford University |
| Выпуск | 1 |
