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Three-Dimensional Chiral Lattice Fermion in Floquet Systems

  • 发布时间:2020-05-16
  • 点击次数:
  • 发表刊物:Physical review letters
  • 摘要:We show that the Nielsen-Ninomiya no-go theorem still holds on a Floquet lattice: there is an equal number of right-handed and left-handed Weyl points in a three-dimensional Floquet lattice. However, in the adiabatic limit, where the time evolution of the low-energy subspace is decoupled from the high-energy subspace, we show that the bulk dynamics in the low-energy subspace can be described by Floquet bands with extra left-or right-handed Weyl points, despite the no-go theorem. Assuming adiabatic evolution of two bands, we show that the difference of the number of right-handed and …
  • 卷号:121
  • 期号:19
  • 页面范围:196401
  • 是否译文:
  • 发表时间:2018

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