Final published version, 213 KB, PDF document
Rights statement: © 2001 American Physical Society
Final published version, 213 KB, PDF document
Available under license: Unspecified
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 125331 |
---|---|
<mark>Journal publication date</mark> | 13/03/2001 |
<mark>Journal</mark> | Physical review B |
Issue number | 12 |
Volume | 63 |
Number of pages | 8 |
Pages (from-to) | 1253311-1253318 |
Publication Status | Published |
<mark>Original language</mark> | English |
We present the results of photoluminescence experiments on the negatively charged exciton X- in GaAs/AlxGa1-xAs quantum wells (QW) in high magnetic fields (≤50 T). Three different QW widths are used here: 100, 120, and 150 Å. All optically allowed transitions of X- are observed, enabling us to experimentally verify its energy-level diagram. All samples behave consistently with this diagram. We have determined the binding energy Eb of the singlet and triplet state of X- between 23 and 50 T for the 120 and 150 Å QW, while only the triplet Eb is observed for the 100 Å QW. A detailed comparison with recent theoretical calculations shows an agreement for all samples across this entire field range.