Nature Communications (Nov 2019)

Dimensional hierarchy of higher-order topology in three-dimensional sonic crystals

  • Xiujuan Zhang,
  • Bi-Ye Xie,
  • Hong-Fei Wang,
  • Xiangyuan Xu,
  • Yuan Tian,
  • Jian-Hua Jiang,
  • Ming-Hui Lu,
  • Yan-Feng Chen

DOI
https://doi.org/10.1038/s41467-019-13333-9
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 10

Abstract

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Here, the authors report the experimental discovery of such a dimensional hierarchy of the topologically-protected 2D surface states, 1D hinge states and 0D corner states in a single 3D acoustic system by using higher-order topological sonic crystals.