Optical and magneto-optical properties of ferromagnetic monolayer CrBr3 : A first-principles GW and GW plus Bethe-Salpeter equation study

  title={Optical and magneto-optical properties of ferromagnetic monolayer 
: A first-principles 
 plus Bethe-Salpeter equation study},
  author={Meng Wu and Zhenglu Li and Steven G. Louie},
  journal={Physical Review Materials},
The discovery of atomically thin two-dimensional (2D) magnetic semiconductors has triggered enormous research interest recently. In this work, we use first-principles many-body perturbation theory to study a prototypical 2D ferromagnetic semiconductor, monolayer chromium tribromide (CrBr3). With broken time-reversal symmetry, spin-orbit coupling, and excitonic effects included through the full-spinor GW and GW plus Bethe–Salpeter equation (GW-BSE) methods, we compute the frequency-dependent… 

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