Ultrafast Dephasing and Coherent Exciton Dynamics in Transition Metal Dichalcogenide Bilayers

Sophia Helmrich,Ulrike Woggon,Nina Owschimikow,Kevin Sampson,Kha Tran,Xiaoqin Li

Ultrafast Dephasing and Coherent Exciton Dynamics in Transition Metal Dichalcogenide Bilayers

2020

Sophia Helmrich
Ulrike Woggon
Nina Owschimikow
Kevin Sampson
Kha Tran
Xiaoqin Li

We investigate quantum dynamics of excitons in MoSe 2 bilayers using coherent two-dimensional spectroscopy. When compared to a MoSe 2 monolayer, we find ultrafast dephasing and an additional excited state absorption in the bilayer.

Keywords:

Bilayer
Dephasing
Exciton
Monolayer
Spectroscopy
Ultrashort pulse
Nonlinear optics
Molecular physics
Quantum dynamics
Materials science

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