Dynamics of dark and bright excitons

By varying the time between the exciton-generating pump pulse and the extreme ultraviolet pulse that kicked out the electrons, the scientists were able to construct a video showing how dark excitons (red) and bright excitons (blue) changed over time.

By varying the time between the exciton-generating pump pulse and the extreme ultraviolet pulse that kicked out the electrons, the scientists were able to construct a video showing how dark excitons (red) and bright excitons (blue) changed over time.

Date:
01 December 2020
Creator:
danielle-ellenby
Credit:
Reprinted with permission from [Madéo et al.], Directly visualizing the momentum-forbidden dark excitons and their dynamics in atomically thin semiconductors AAAS Science 2020
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