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Trion valley coherence in monolayer semiconductors

Hao, Kai ; Xu, Lixiang ; Wu, Fengcheng ; Nagler, Philipp ; Tran, Kha ; Ma, Xin ; Schüller, Christian ; Korn, Tobias ; MacDonald, Allan H. ; Moody, Galan ; Li, Xiaoqin



Abstract

The emerging field of valleytronics aims to exploit the valley pseudospin of electrons residing near Bloch band extrema as an information carrier. Recent experiments demonstrating optical generation and manipulation of exciton valley coherence (the superposition of electron-hole pairs at opposite valleys) in monolayer transition metal dichalcogenides (TMDs) provide a critical step towards control ...

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