Sample under study.(A) Schematic of hBN-encapsulated WSe2 monolayer with FLG top gate and contacts. The optical pump and probe are spatially separated. (B) Optical microscope image of sample D1. (C) Gate-dependent reflection spectra of the WSe2 sample. The excitonic resonance features are labeled correspondingly. a.u., arbitrary units. (D) σ+ and ...
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