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

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.

Bibliographic Details
Main Authors: Wang Zilong, Molina-Sanchez Alejandro, Altmann Patrick, Sangalli Davide, De Fazio Domenico, Soavi Giancarlo, Sassi Ugo, Bottegoni Federico, Ciccacci Franco, Finazzi Marco, Wirtz Ludger, Ferrari Andrea, Marini Andrea, Cerullo Giulio, Dal Conte Stefano
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2019/10/epjconf_up2019_05012.pdf