Nature Communications (Aug 2022)

Ultrafast pseudospin quantum beats in multilayer WSe2 and MoSe2

  • Simon Raiber,
  • Paulo E. Faria Junior,
  • Dennis Falter,
  • Simon Feldl,
  • Petter Marzena,
  • Kenji Watanabe,
  • Takashi Taniguchi,
  • Jaroslav Fabian,
  • Christian Schüller

DOI
https://doi.org/10.1038/s41467-022-32534-3
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 8

Abstract

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Here, the authors investigate excitonic transitions in mono- and multi-layer WSe2 and MoSe2 by time-resolved Faraday ellipticity (TRFE) with in-plane magnetic fields, and attribute the oscillatory TRFE signal in the multilayer samples to pseudospin quantum beats of excitons, a manifestation of spin- and pseudospin layer locking.