Chiral Metamaterials: Room‐Temperature Active Modulation of Valley Dynamics in a Monolayer Semiconductor through Chiral Purcell Effects (Adv. Mater. 49/2019). Issue 49 (3rd December 2019)

• Record Type: Journal Article
• Authors: Wu, Zilong; Li, Jingang; Zhang, Xiaotian; Redwing, Joan M.; Zheng, Yuebing
• Is Part Of: Advanced materials. Volume 31:Issue 49(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-12-03
• Subjects: 2D materials -- chiral metamaterials -- Purcell effects -- transition metal dichalcogenides -- valley excitons; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201970347
• Languages: English
• ISSNs: 0935-9648

Abstract

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.