Transient circular dichroism and exciton spin dynamics in all-inorganic halide perovskites

  title={Transient circular dichroism and exciton spin dynamics in all-inorganic halide perovskites},
  author={Weijie Zhao and Rui Su and Yuqing Huang and Jinqi Wu and Chee Fai Fong and Jiangang Feng and Qihua Xiong},
  journal={Nature Communications},
  • W. Zhao, Rui Su, +4 authors Q. Xiong
  • Published 9 November 2020
  • Materials Science, Medicine
  • Nature Communications
All-inorganic metal halides perovskites (CsPbX3, X = Br or Cl) show strong excitonic and spin-orbital coupling effects, underpinning spin-selective excitonic transitions and therefore exhibiting great promise for spintronics and quantum-optics applications. Here we report spin-dependent optical nonlinearities in CsPbX3 single crystals by using ultrafast pump-probe spectroscopy. Many-body interactions between spin-polarized excitons act like a pseudo-magnetic field and thus lift the degeneracy… Expand
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