Abstract

In article number 1904132, Yuebing Zheng and co-workers achieve room-temperature valley modulation by embedding monolayer WSe2 in Moiré chiral metamaterials. The spin-dependent interactions between valley excitons and plasmon-enhanced chiral electromagnetic near-fields enable asymmetric Purcell effects on the spontaneous decay of excitons at the K and K' valleys of the monolayer WSe2, leading to facilely tunable valley-polarized emission at room temperature.

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