Piezoelectric exciton acoustic-phonon coupling in single quantum dots

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dc.identifier.uri http://dx.doi.org/10.15488/2864
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/2890
dc.contributor.author Sarkar, D.
dc.contributor.author Van Der Meulen, H.P.
dc.contributor.author Calleja, J.M.
dc.contributor.author Meyer, J.M.
dc.contributor.author Haug, Rolf J.
dc.contributor.author Pierz, Klaus
dc.date.accessioned 2018-02-23T13:27:28Z
dc.date.available 2018-02-23T13:27:28Z
dc.date.issued 2008
dc.identifier.citation Sarkar, D.; Van Der Meulen, H.P.; Calleja, J.M.; Meyer, J.M.; Haug, R.J.; Pierz, K.: Piezoelectric exciton acoustic-phonon coupling in single quantum dots. In: Physical Review B 78 (2008), Nr. 24, 241305. DOI: https://doi.org/10.1103/PhysRevB.78.241305
dc.description.abstract Microphotoluminescence spectroscopy at variable temperature, excitation intensity, and energy was performed on a single InAs/AlAs self-assembled quantum dot. The exciton emission line [zero-phonon line (ZPL)] exhibits a broad sideband due to exciton acoustic-phonon coupling by the deformation-potential mechanism. Additionally, narrow low-energy sidebands at about 0.25 meV of the ZPL are attributed to exciton acoustic-phonon piezoelectric coupling. In lowering the excitation energy or intensity these bands gradually dominate the emission spectrum of the quantum dot while the ZPL disappears. At high excitation intensity the sidebands due to piezoelectric coupling decrease strongly and the ZPL dominates the spectrum as a consequence of screening of the piezoelectric coupling by the photocreated free carriers. © 2008 The American Physical Society. eng
dc.language.iso eng
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Review B 78 (2008), Nr. 24
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject ZPL eng
dc.subject quantum dots eng
dc.subject microphotoluminescence spectroscopy eng
dc.subject.ddc 530 | Physik ger
dc.title Piezoelectric exciton acoustic-phonon coupling in single quantum dots
dc.type article
dc.type Text
dc.relation.issn 10980121
dc.relation.doi https://doi.org/10.1103/PhysRevB.78.241305
dc.bibliographicCitation.issue 24
dc.bibliographicCitation.volume 78
dc.bibliographicCitation.firstPage 241305
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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