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Direct Observation of Ultrafast Singlet Exciton Fission in Three Dimensions
Arjun Ashoka, Nicolas Gauriot, Aswathy V. Girija +7
We present quantitative ultrafast interferometric pump-probe microscopy capable of tracking of photoexcitations with sub 10 nm spatial precision in three dimensions with 15 fs temp…
Observation of ~100% valley-coherent excitons in monolayer MoS2 through giant enhancement of valley coherence time
Garima Gupta, Kenji Watanabe, Takashi Taniguchi +1
In monolayer transition metal dichalcogenide semiconductors, valley coherence degrades rapidly due to a combination of fast scattering and inter-valley exchange interaction. This l…
Intrinsic Donor-Bound Excitons in Ultraclean Monolayer Semiconductors
Pasqual Rivera, Minhao He, Bumho Kim +16
The monolayer transition metal dichalcogenides are an emergent semiconductor platform exhibiting rich excitonic physics with coupled spin-valley degree of freedom and optical addre…