Topological kink states at a tilt boundary in gated multi-layer graphene

  title={Topological kink states at a tilt boundary in gated multi-layer graphene},
  author={Abolhassan Vaezi and Yufeng Liang and D. H. Ngai and Li Yang and Eun-Ah Kim},
  journal={arXiv: Mesoscale and Nanoscale Physics},
The search for new realization of topologically protected edge states is an active area of research. We show that a tilt boundary in gated multi-layer graphene supports topologically protected gapless kink states, associated with quantum valley Hall insulator (QVH). We investigate such kink states from two perspectives: the microscopic perspective of a tight-binding model and an ab-initio calculation on bilayer, and the perspective of symmetry protected topological (SPT) states for general… 

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