Dark topological valley Hall edge solitons

  title={Dark topological valley Hall edge solitons},
  author={Boquan Ren and Hongguang Wang and Victor O. Kompanets and Yaroslav V. Kartashov and Yongdong Li and Yiqi Zhang},
  pages={3559 - 3566}
Abstract Topological edge solitons propagating along the edge of a photonic topological insulator are localized self-sustained hybrid states that are immune to defects/disorders due to the protection of the edge states stemming from the nontrivial topology of the system. Here, we predict that exceptionally robust dark valley Hall edge solitons may form at the domain walls between two honeycomb lattices with broken inversion symmetry. The underlying structure can be created with femtosecond… 

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