Real-time observation of the intravalley spin-flip process in single-layer WS2

Zilong Wang,Alejandro Molina-Sanchez,Patrick Altmann,Davide Sangalli,Domenico De Fazio,Giancarlo Soavi,Ugo Sassi,Federico Bottegoni,Franco Ciccacci,Marco Finazzi,Ludger Wirtz,Andrea Ferrari,Andrea Marini,Giulio Cerullo,Stefano Dal Conte

EPJ Web of Conferences（2019）

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摘要

We use helicity-resolved transient absorption spectroscopy to track intravalley scattering dynamics in monolayer WS2. We find that spin-polarized carriers scatter from upper to lower conduction band by reversing their spin orientation on a sub-ps timescale.

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关键词

real-time,spin-flip,single-layer

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