Floquet-engineering of nodal rings and nodal spheres and their characterization using the quantum metric

  title={Floquet-engineering of nodal rings and nodal spheres and their characterization using the quantum metric},
  author={Grazia Salerno and Nathan Goldman and Giandomenico Palumbo},
  journal={Physical Review Research},
Semimetals exhibiting nodal lines or nodal surfaces represent a novel class of topological states of matter. While conventional Weyl semimetals exhibit momentum-space Dirac monopoles, these more exotic semimetals can feature unusual topological defects that are analogous to extended monopoles. In this work, we describe a scheme by which nodal rings and nodal spheres can be realized in synthetic quantum matter through well-defined periodic-driving protocols. As a central result of our work, we… 

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