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Conferences > UP > 2022 > M2B > M2B.1

Momentum-Resolved Intervalley and Intravalley Exciton Coupling in Monolayer WS2

Alice Kunin, Sergey Chernov, Jin Bakalis, Ziling Li, Shuyu Cheng, Zachary H. Withers, Michael G. White, Gerd Schönhense, Xu Du, Roland K. Kawakami, and Thomas K. Allison

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Abstract

Using time-resolved angle-resolved photoemission spectroscopy (tr-ARPES), we image the dynamics of intervalley and intravalley excitons in monolayer WS2. We observe strong coupling between photoexcited B and A excitons and directly visualize the ultrafast valley depolarization.

© 2022 The Author(s)

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