Nature Communications (May 2019)

Physical origin of giant excitonic and magneto-optical responses in two-dimensional ferromagnetic insulators

  • Meng Wu,
  • Zhenglu Li,
  • Ting Cao,
  • Steven G. Louie

DOI
https://doi.org/10.1038/s41467-019-10325-7
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 8

Abstract

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The magneto-optical (MO) effects probe the electronic and magnetic properties of a material, particularly useful for 2D magnets. Here, the authors show that the large optical and MO responses in ferromagnetic monolayer CrI3 arise from strongly bound excitons, extending over several atoms.