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Size filtering effect in vertical stacks of In(Ga)As/GaAs self-assembled quantum rings

AuthorsOuerghui, W.; Melliti, A.; Maaref, M. A.; Martínez Pastor, Juan Pascual ; Gomis, J.; Granados, Daniel ; García Martínez, Jorge Manuel
KeywordsQuantum rings
Vertical stack
Issue DateMar-2006
CitationMaterials Science and Engineering C 26(2-3): 297-299 (2006)
AbstractWe present a systematic study of closely In(Ga)As/InAs quantum rings (QRs) grown by molecular beam epitaxy (MBE). Photoluminescence (PL) experiments show a strong filtering effect in the ring being stacked and simultaneous linewidth narrowing for the appropriate layer thickness (thinner thickness). If the spacer thickness is further reduced, a strong coupling between the nanostructures is produced and the signal shifts to low energy.
Description3 páginas, 3 figuras.
Publisher version (URL)http://dx.doi.org/10.1016/j.msec.2005.10.046
Appears in Collections:(IMN-CNM) Artículos
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