The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.
Acoustic Realization of Quadrupole Topological Insulators
Open accessAbstract
A quadrupole topological insulator, being one higher-order topological insulator with nontrivial quadrupole quantization, has been intensely investigated very recently. However, the tight-binding model proposed for such emergent topological insulators demands both positive and negative hopping coefficients, which imposes an obstacle in practical realizations. Here, we introduce a feasible approach to design the sign of hopping in acoustics, and construct the first acoustic quadrupole topological insulator that stringently emulates the tight-binding model. The inherent hierarchy quadrupole topology has been experimentally confirmed by detecting the acoustic responses at the bulk, edge, and corner of the sample. Potential applications can be anticipated for the topologically robust in-gap states, such as acoustic sensing and energy trapping.
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Photonic Floquet topological insulators
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Observation of unidirectional backscattering-immune topological electromagnetic states
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Photonic topological insulators
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Cited by
Xie, B., Wang, H.-X., Zhang, X., Zhan, P., Jiang, J.-H., Lu, M., & Chen, Y. (2021) · Nature Reviews Physics · doi:10.1038/s42254-021-00323-4 · Cited by 543
Xue, H., Yang, Y., & Zhang, B. (2022) · Nature Reviews Materials · doi:10.1038/s41578-022-00465-6 · Cited by 450
Metadata
- Authors
- Qi, Y., Qiu, C., Xiao, M., He, H., Ke, M., & Liu, Z.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2020-05-18
- Volume
- 124
- Issue
- 20
- Pages
- 206601-206601
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W3027364964
- Cited by
- 287
- References
- 68
- FWCI
- 16.27
- Type
- journal article
- Language
- en
- Open access
- green
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