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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.20076 |
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| _version_ | 1866913812036190208 |
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| author | Xia, Yifei Chen, An Zhang, Ting Yang, Jing Liang, Bin Christensen, Johan Cheng, Jianchun |
| author_facet | Xia, Yifei Chen, An Zhang, Ting Yang, Jing Liang, Bin Christensen, Johan Cheng, Jianchun |
| contents | Topological insulators, a fundamental concept in modern condensed matter physics, support localized states at the interfaces between insulators exhibiting different topological phases, which conventionally rely on explicit symmetry breaking. Here, we propose a mechanism to induce a real-space topological phase transition by spontaneous symmetry breaking, thereby constructing an acoustic metagrating to generate nontrivial Jackiw-Rebbi states characterized by robust imaginary band degeneracy. Our experimental implementation verifies the acoustic delocalized interface state with a constant phase jump, demonstrating enhanced high-directivity topological radiation. We foresee that our findings may spark interest in engineering new acoustic topological devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20076 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Acoustic topological Jackiw-Rebbi states at symmetry broken interfaces Xia, Yifei Chen, An Zhang, Ting Yang, Jing Liang, Bin Christensen, Johan Cheng, Jianchun Mesoscale and Nanoscale Physics Topological insulators, a fundamental concept in modern condensed matter physics, support localized states at the interfaces between insulators exhibiting different topological phases, which conventionally rely on explicit symmetry breaking. Here, we propose a mechanism to induce a real-space topological phase transition by spontaneous symmetry breaking, thereby constructing an acoustic metagrating to generate nontrivial Jackiw-Rebbi states characterized by robust imaginary band degeneracy. Our experimental implementation verifies the acoustic delocalized interface state with a constant phase jump, demonstrating enhanced high-directivity topological radiation. We foresee that our findings may spark interest in engineering new acoustic topological devices. |
| title | Acoustic topological Jackiw-Rebbi states at symmetry broken interfaces |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2504.20076 |