• Corpus ID: 119083878

Higher-Order Floquet Topological Insulators with Anomalous Corner States

@article{Huang2018HigherOrderFT,
  title={Higher-Order Floquet Topological Insulators with Anomalous Corner States},
  author={Biao Huang and W. Vincent Liu},
  journal={arXiv: Strongly Correlated Electrons},
  year={2018}
}
  • Biao HuangW. Liu
  • Published 1 November 2018
  • Physics
  • arXiv: Strongly Correlated Electrons
Higher order topological insulators have emerged as a new class of phases, whose robust in-gap "corner" modes arise from the bulk higher-order multipoles beyond the dipoles in conventional topological insulators. Despite rapid theoretical and experimental breakthroughs, all discussions have been constrained to the static scenario due to the lack of specific schemes to compute higher-order dynamical topological invariant. Here we provide a concrete model and explicit constructions of topological… 

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In fact, there are infinitely many choices to back up the angles. We demonstrate one such choice in

    The direct product of Pauli matrices τ, σ can be understood as