| Zugriffsnummer | 22240 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Resonant optical excitation of longitudinal-optical phonons and intermixing in InAs/AlAs single quantum dots |
| Autor(in); Institution |
Sarkar, D; Universidad Autonoma de Madrid, Departamento Física de Materiales, Madrid, SPAIN
Meulen, H. P. van der; Universidad Autonoma de Madrid, Departamento Física de Materiales, Madrid, SPAIN
Calleja, J. M.; Universidad Autonoma de Madrid, Departamento Física de Materiales, Madrid, SPAIN
Meyer, J. M.; Leibniz Universität Hannover, Institut für Festkörperphysik, Hannover, GERMANY
Haug, R. J.; Leibniz Universität Hannover, Institut für Festkörperphysik, Hannover, GERMANY
Pierz, Klaus; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
|
| Quelle/Jahr | Applied Physics Letters: 92 (2008), 18, 181909-1 - 181909-3 |
| ISSN | 0003-6951 |
| DOI | |
| Verlag | Melville, NY: American Institute of Physics |
| Zusammenfassung | Excitations of a single InAs/AlAs self-assembled quantum dot were investigated by photoluminescence excitation spectroscopy. Resonant absorption by longitudinal-optical (LO) phonons of the quantum dot and the barriers is observed. In particular, a resonance at 41 meV is attributed to the AlAs-like mode of InAlAs with low Al content. Our results represent a direct optical measure of the intermixing (estimated below 10%) in a single quantum dot. They also demonstrate that all LO phonons of this mixed quantum dot system couple to the exciton states. |
Zitierung
Sarkar, D., Meulen, H. P. V. D., Calleja, J. M., Meyer, J. M., Haug, R. J., & Pierz, K. (2008). Resonant optical excitation of longitudinal-optical phonons and intermixing in InAs/AlAs single quantum dots. Applied Physics Letters, 92(18), 181909-1–181909-3. https://doi.org/10.1063/1.2920441