| Автор | Vadim A Markel |
| Автор | Michael R Geller |
| Дата выпуска | 2000-08-28 |
| dc.description | There is currently great interest in the dynamics of electrons and phonons in low-dimensional systems, where the effects of quantum confinement cause a dramatic difference in their behaviour as compared with bulk systems. In this paper we consider a localized electronic impurity state (an electronic two-level system) linearly coupled to the vibrational modes of an isolated nanometre-scale insulating crystal, and study the phonon emission rate at frequencies less than that of the lowest internal vibrational mode, i.e., in the acoustic `gap'. We show that, at finite temperature, electronic energy relaxation below the acoustic gap can occur as a result of anharmonic broadening of vibrational modes, and we calculate the frequency and temperature dependence of the relaxation provided by this mechanism. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | One-phonon relaxation of localized electronic states in anharmonic nanoparticles |
| Тип | paper |
| DOI | 10.1088/0953-8984/12/34/304 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 12 |
| Первая страница | 7569 |
| Последняя страница | 7582 |
| Аффилиация | Vadim A Markel; Department of Physics and Astronomy, University of Georgia, Athens, GA 30602-2451, USA |
| Аффилиация | Michael R Geller; Department of Physics and Astronomy, University of Georgia, Athens, GA 30602-2451, USA |
| Выпуск | 34 |
