Abstract
We use helicity-resolved transient absorption spectroscopy to track intravalley scattering dynamics in monolayer WS2. We find that spin-polarized carriers scatter from upper to lower conduction band by reversing their spin orientation on a sub-ps timescale.
Highlights
The strong dependence of τrise on the lattice temperature strongly suggests that this relaxation process is mediated by phonons
We find that spinpolarized carriers scatter from upper to lower conduction band by reversing their spin orientation on a sub-ps timescale
In two-dimensional Transition Metal Dichalcogenides (TMDs) interactions with light are dominated by strongly bounded excitons due to the low-dimensional quantum confinement[1]
Summary
The strong dependence of τrise on the lattice temperature strongly suggests that this relaxation process is mediated by phonons (right panel of Fig. 1). We use helicity-resolved transient absorption spectroscopy to track intravalley scattering dynamics in monolayer WS2.
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