Nature Communications (Nov 2021)

Interlayer exciton mediated second harmonic generation in bilayer MoS2

  • Shivangi Shree,
  • Delphine Lagarde,
  • Laurent Lombez,
  • Cedric Robert,
  • Andrea Balocchi,
  • Kenji Watanabe,
  • Takashi Taniguchi,
  • Xavier Marie,
  • Iann C. Gerber,
  • Mikhail M. Glazov,
  • Leonid E. Golub,
  • Bernhard Urbaszek,
  • Ioannis Paradisanos

DOI
https://doi.org/10.1038/s41467-021-27213-8
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 9

Abstract

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Efficient second-harmonic generation (SHG) occurs for crystals with broken inversion symmetry, such as transition metal dichalcogenide monolayers. Here the authors show SHG tuning in bilayer MoS2 - an inversion-symmetric crystal - mediated by interlayer excitons.