| Autor: |
Kim, D., Sheng, W., Poole, P. J., Dalacu, D., Lefebvre, J., Lapointe, J., Reimer, M. E., Aers, G. C., Williams, R. L. |
| Rok vydání: |
2008 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.79.045310 |
| Popis: |
Photoluminescence data from single, self-assembled InAs/InP quantum dots in magnetic fields up to 7 T are presented. Exciton g-factors are obtained for dots of varying height, corresponding to ground state emission energies ranging from 780 meV to 1100 meV. A monotonic increase of the g-factor from -2 to +1.2 is observed as the dot height decreases. The trend is well reproduced by sp3 tight binding calculations, which show that the hole g-factor is sensitive to confinement effects through orbital angular momentum mixing between the light-hole and heavy-hole valence bands. We demonstrate tunability of the exciton g-factor by manipulating the quantum dot dimensions using pyramidal InP nanotemplates. |
| Databáze: |
arXiv |
| Externí odkaz: |
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