Nature Communications (Jul 2020)

Hybrid exciton-plasmon-polaritons in van der Waals semiconductor gratings

  • Huiqin Zhang,
  • Bhaskar Abhiraman,
  • Qing Zhang,
  • Jinshui Miao,
  • Kiyoung Jo,
  • Stefano Roccasecca,
  • Mark W. Knight,
  • Artur R. Davoyan,
  • Deep Jariwala

DOI
https://doi.org/10.1038/s41467-020-17313-2
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 9

Abstract

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The authors investigate the optical properties of a heterostructure formed by a metallic substrate and a nanostructured transition metal dichalcogenide multilayer by measuring the reflectance spectrum at different multilayer thicknesses, filling factors and grating periods. The spectra show strong dispersion and avoided crossing of excitons, plasmons and cavity photons along with excitonic mode suppression at the anti-crossing point.