Title: Electron and hole confinement in stacked self-assembled InP quantum dots
Authors: Hayne, M ×
Provoost, R
Zundel, MK
Manz, YL
Eberl, K
Moshchalkov, Victor #
Issue Date: 2000
Series Title: Physical review. B, Condensed matter vol:62 issue:15 pages:10324-10328
Conference: date:Katholieke Univ Leuven, Vaste Stof Fys Magnetisme Lab, B-3001 Louvain, Belgium; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
Abstract: We report photoluminescence measurements on stacked self-assembled InP quantum dots in magnetic fields up to 50 T. For triply stacked layers the dots become strongly coupled when the layer separation is 4 nm or less. In contrast, doubly stacked layers show no sign of coupling. We explain this puzzling difference in coupling by proposing a model in which the holes are weakly confined in the GaxIn1-xP layers separating the layers of dots, and are responsible for the coupling. Since only one such intervening layer exists in the doubly stacked dots coupling is excluded. Our model is strongly supported by the exciton masses and radii derived from our experimental results, and is consistent with available theory.
ISSN: 0163-1829
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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