Directly visualizing the momentum-forbidden dark excitons and their dynamics in atomically thin semiconductors

Resolving momentum degrees of freedom of excitons, which are electron-hole pairs bound by the Coulomb attraction in a photoexcited semiconductor, has remained an elusive goal for decades. In atomically thin semiconductors, such a capability could probe the momentum-forbidden dark excitons, which cri...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2020-12, Vol.370 (6521), p.1199-1204
Main Authors: Madéo, Julien, Man, Michael K. L., Sahoo, Chakradhar, Campbell, Marshall, Pareek, Vivek, Wong, E. Laine, Al-Mahboob, Abdullah, Chan, Nicholas S., Karmakar, Arka, Mariserla, Bala Murali Krishna, Li, Xiaoqin, Heinz, Tony F., Cao, Ting, Dani, Keshav M.
Format: Article
Language:English
Subjects:
Attraction
Excitation
Excitation spectra
Excitons
Holes (electron deficiencies)
Momentum
Monolayers
Optical activity
Optics
Optoelectronics
Photoelectric emission
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Properties (attributes)
Semiconductors
Tungsten
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