Demonstration of a quantized acoustic octupole topological insulator
Although multipole topological insulators have been theoretically described and experimentally observed in 2D, third-order topological insulators in 3D have not been observed yet. Here, the authors realize for the first time a quantized octupole 3D topological state in an acoustic metamaterial.
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Nature Publishing Group
2020-04-01
|
Series: | Nature Communications |
Online Access: | https://doi.org/10.1038/s41467-020-15705-y |