Nature Communications (Jul 2018)

The role of momentum-dark excitons in the elementary optical response of bilayer WSe2

  • Jessica Lindlau,
  • Malte Selig,
  • Andre Neumann,
  • Léo Colombier,
  • Jonathan Förste,
  • Victor Funk,
  • Michael Förg,
  • Jonghwan Kim,
  • Gunnar Berghäuser,
  • Takashi Taniguchi,
  • Kenji Watanabe,
  • Feng Wang,
  • Ermin Malic,
  • Alexander Högele

DOI
https://doi.org/10.1038/s41467-018-04877-3
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 7

Abstract

Read online

The electronic band structure of atomically thin transition metal dichalcogenides is strongly sensitive to the number of layers, resulting in modified light emission. Here, the authors investigate the cryogenic emission from bilayer WSe2 to identify the role of momentum-indirect excitons for its optical response.