Title: Experimental observation of the negatively charged exciton stales in high magnetic fields
Authors: Vanhoucke, Tony ×
Hayne, M
Moshchalkov, Victor
Henini, M #
Issue Date: 2000
Series Title: Nanotechnology vol:11 issue:4 pages:281-285
Conference: date:Katholieke Univ Leuven, Vaste Stof Fys & Magnetisme Lab, B-3001 Louvain, Belgium; Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
Abstract: We have studied the high magnetic field (less than or equal to 50 T) dependence of the negatively charged exciton properties in GaAs/AlxGa1-xAs (x = 0.33) quantum wells using photoluminescence (PL) spectroscopy. Observation of all the optically allowed transitions of the charged exciton allows us to experimentally verify a revised energy-level diagram of spin-split singlet and triplet states. The PL data obtained on all samples are completely consistent with this diagram, leading us to conclude that the negatively charged exciton is a model three-particle system. The binding energy of the negatively charged exciton is measured between 23 and 50 T, and found to be constant for both singlet and triplet states. Our results are compared with recent theory.
ISSN: 0957-4484
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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