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In article number 2003005, Sejeong Kim, Ki Tae Nam, and co‐workers achieve a large degree of circular polarization (≈45%) at room temperature using a single chiral plasmonic nanoparticle on a transition metal dichalcogenide (TMD) monolayer. The chiral nanoparticle also induces circularly‐polarized luminescence with a linear excitation, which has been rarely reported.
Valley polarization is among the most critical attributes of atomically thin materials. However, increasing contrast from monolayer transition metal dichalcogenides (TMDs) has so far been challenging. In this work, a large degree of circular polarization up to 45% from a monolayer WS2 is achieved at room temperature by using a single chiral plasmonic nanoparticle. The increased contrast is attributed...
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