| Autor: |
Smoleński, Tomasz, Kazimierczuk, Tomasz, Goryca, Mateusz, Jakubczyk, Tomasz, Kłopotowski, Łukasz, Cywiński, Łukasz, Wojnar, Piotr, Golnik, Andrzej, Kossacki, Piotr |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 86, 241305(R) (2012) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.86.241305 |
| Popis: |
We demonstrate evidence for a radiative recombination channel of dark excitons in self-assembled quantum dots. This channel is due to a light hole admixture in the excitonic ground state. Its presence was experimentally confirmed by a direct observation of the dark exciton photoluminescence from a cleaved edge of the sample. The polarization resolved measurements revealed that a photon created from the dark exciton recombination is emitted only in the direction perpendicular to the growth axis. Strong correlation between the dark exciton lifetime and the in-plane hole g-factor enabled us to show that the radiative recombination is a dominant decay channel of the dark excitons in CdTe/ZnTe quantum dots. |
| Databáze: |
arXiv |
| Externí odkaz: |
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