EPJ Web Conf.
Volume 205, 2019XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)
|Number of page(s)||3|
|Section||Semiconductors, Transition-Metals and Nanocrystals|
|Published online||16 April 2019|
Real-time observation of the intravalley spin-flip process in single-layer WS2
1 Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, I-20133 Milano, Italy
2 Institute of Materials Science (ICMUV), University of Valencia, Catedràtico Beltràn 2, E-46980, Valencia, Spain
3 Istituto di Struttura della Materia (ISM), CNR, Via Salaria Km 29.3, I-00016 Monterotondo Stazione, Italy
4 Cambridge Graphene Centre, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
5 Université du Luxembourg, 162 A, avenue de la Faiencerie, L-1511 Luxembourg
6 IFN-CNR, Piazza L. da Vinci 32, I-20133 Milano, Italy
Published online: 16 April 2019
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.
© The Authors, published by EDP Sciences, 2019
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