Long valley lifetime of dark excitons in single-layer WSe2

The valley degree of freedom in monolayer transition metal dichalcogenides can be addressed by optical means. Here, the authors develop a waveguide-based method to detect emission from dark excitons in single-layer WSe2, access the valley degree of freedom through the Zeeman effect, and demonstrate...

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Bibliographic Details
Main Authors: Yanhao Tang, Kin Fai Mak, Jie Shan
Format: Article
Language:English
Published: Nature Publishing Group 2019-09-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-019-12129-1