Higher-order Dirac semimetal in a photonic crystal

  title={Higher-order Dirac semimetal in a photonic crystal},
  author={Zihao Wang and Dongjue Liu and H.T. Teo and Qiang Wang and Haoran Xue and Baile Zhang},
  journal={Physical Review B},
The recent discovery of higher-order topology has largely enriched the classification of topological materials. Theoretical and experimental studies have unveiled various higher-order topological insulators that exhibit topologically protected corner or hinge states. More recently, higher-order topology has been introduced to topological semimetals. Thus far, realistic models and experimental verifications on higher-order topological semimetals are still very limited. Here, we design and… 

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