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Title: Nonparabolic band effects in GaAs/AlxGa1-xAs quantum dots and ultrathin quantum wells
Authors: Schildermans, Nele ×
Hayne, Manus
Moshchalkov, Victor
Rastelli, A
Schmidt, OG #
Issue Date: Sep-2005
Publisher: American physical soc
Series Title: Physical Review B vol:72 issue:11 pages:115312-1-115312-5
Abstract: We have investigated the optical properties of unstrained GaAs/AlxGa1-xAs quantum dot/well systems with the aim of studying the influence of confinement on the effective exciton mass, as determined from the photoluminescence line shift in high magnetic fields (<= 50 T). The effective exciton mass is found to be more than twice the value for bulk GaAs. We attribute this to an enhanced nonparabolicity in the GaAs conduction band at the nanoscale.
ISSN: 1098-0121
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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