Piezoelectric screening in single InAs/AlAs quantum dots
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Original version
Sarkar, D.; Van Der Meulen, H.P.; Calleja, J.M.; Meyer, J.M.; Haug, R.J.; Pierz, K.: Piezoelectric screening in single InAs/AlAs quantum dots. In: AIP Conference Proceedings 1199 (2009), S. 299-300. DOI:
https://doi.org/10.1063/1.3295419
Repository version
To cite the version in the repository, please use this identifier:
https://doi.org/10.15488/2801
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Abstract:
Micro-photoluminescence spectroscopy for varying temperature, excitation intensity and energy was performed on a single InAs/AlAs self-assembled quantum dot. A broad sideband at 1.2 meV of the zero phonon line is attributed to the exciton-acoustic phonon interaction via deformation potential coupling. The piezoelectric coupling of the exciton to long-wavelength phonons is also observed and gives rise to a narrow low-energy sideband at about 0.25 meV of the zero-phonon line. This band strengthens with decreasing density of photocreated free carriers, since they screen out the piezoelectric coupling mechanism. © 2009 American Institute of Physics.
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Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Publication type:
Article
Publishing status:
publishedVersion
Publication date:
2009
Keywords english:
Exciton-phonon interaction
,
III-V semiconductors
,
Photoluminescence
,
Piezoelectricity
,
Quantum dots
DDC:
530 | Physik
Controlled keywords(GND):
Konferenzschrift
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Fakultät für Mathematik und Physik
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