Pseudo-time-reversal symmetry and topological edge states in two-dimensional acoustic crystals

Abstract
We propose a simple two-dimensional acoustic crystal to realize topologically protected edge states for acoustic waves. The acoustic crystal is composed of a triangular array of core-shell cylinders embedded in a water host. By utilizing the point group symmetry of two doubly degenerate eigenstates at the Î

Citation
Mei J, Chen Z, Wu Y (2016) Pseudo-time-reversal symmetry and topological edge states in two-dimensional acoustic crystals. Scientific Reports 6: 32752. Available: http://dx.doi.org/10.1038/srep32752.

Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos 11274120 and 11574087) and King Abdullah University of Science and Technology (KAUST).

Publisher
Springer Nature

Journal
Scientific Reports

DOI
10.1038/srep32752

PubMed ID
27587311

arXiv
1606.02944

Additional Links
http://www.nature.com/articles/srep32752

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