Positive-Negative Birefringence in Multiferroic Layered Metasurfaces.

  title={Positive-Negative Birefringence in Multiferroic Layered Metasurfaces.},
  author={Ramaz Khomeriki and Levan Chotorlishvili and Igor Tralle and Jamal Berakdar},
  journal={Nano letters},
  volume={16 11},
We uncover and identify the regime for a magnetically and ferroelectrically controllable negative refraction of a light-traversing multiferroic, oxide-based metastructure consisting of alternating nanoscopic ferroelectric (SrTiO3) and ferromagnetic (Y3Fe2(FeO4)3, YIG) layers. We perform analytical and numerical simulations based on discretized, coupled equations for the self-consistent Maxwell/ferroelectric/ferromagnetic dynamics and obtain a biquadratic relation for the refractive index… 
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