Vanhoucke, Tony and Hayne, Manus and Henini, Mohamed and Moshchalkov, Victor V (2001) Magneto-photoluminescence of negatively charged excitons in narrow quantum wells. Physical Review B, 63 (12). p. 125331.
Abstract
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.
| Item Type: | Article |
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| Journal or Publication Title: | Physical Review B |
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| Additional Information: | First experimental observation of 'dark' and 'bright' triplets of the negatively-charged trion. Measured binding energies of all trion states (singlet, dark & bright triplets) confirmed the theory of W'js et al. PRB 62, 4630 (2001), resolving a controversy. International collaboration. 27 citations. RAE_import_type : Journal article RAE_uoa_type : Physics ©2001 The American Physical Society |
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| Subjects: | Q Science > QC Physics |
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| Departments: | Faculty of Science and Technology > Physics |
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| ID Code: | 2283 |
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| Deposited By: | ep_importer |
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| Deposited On: | 04 Apr 2008 09:16 |
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| Refereed?: | Yes |
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| Published?: | Published |
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| Last Modified: | 26 Jul 2012 16:07 |
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| Identification Number: | |
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| URI: | http://eprints.lancs.ac.uk/id/eprint/2283 |
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