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Probing many-body interactions in monolayer transition-metal dichalcogenides

Van Tuan, Dinh ; Scharf, Benedikt ; Wang, Zefang ; Shan, Jie ; Mak, Kin Fai ; Žutić, Igor ; Dery, Hanan



Abstract

Many-body interactions in monolayer transition-metal dichalcogenides are strongly affected by their unique band structure. We study these interactions by measuring the energy shift of neutral excitons (bound electron-hole pairs) in gated WSe2 and MoSe2. Surprisingly, while the blueshift of the neutral exciton X-0 in electron-doped samples can be more than 10 meV, the blueshift in hole-doped ...

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