Nature Communications (Sep 2020)

Observation of the polaronic character of excitons in a two-dimensional semiconducting magnet CrI3

  • Wencan Jin,
  • Hyun Ho Kim,
  • Zhipeng Ye,
  • Gaihua Ye,
  • Laura Rojas,
  • Xiangpeng Luo,
  • Bowen Yang,
  • Fangzhou Yin,
  • Jason Shih An Horng,
  • Shangjie Tian,
  • Yang Fu,
  • Gongjun Xu,
  • Hui Deng,
  • Hechang Lei,
  • Adam W. Tsen,
  • Kai Sun,
  • Rui He,
  • Liuyan Zhao

DOI
https://doi.org/10.1038/s41467-020-18627-x
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 7

Abstract

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Exciton dynamics can be strongly affected by lattice vibrations through electron-phonon (e-ph) coupling. Here, the authors show the presence of strong e-ph coupling in bilayer CrI3 and observe a Raman feature with periodic broad modes up to the 8th order, attributed to the polaronic character of excitons.