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240222s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202312421
|2 doi
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|a DE-627
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|a eng
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| 100 |
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|a Gao, Feng
|e verfasserin
|4 aut
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| 245 |
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|a Acoustic Higher-Order Topological Insulators Induced by Orbital-Interactions
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 07.06.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a The discovery of higher-order topological insulator metamaterials, in analogy with their condensed-matter counterparts, has enabled various breakthroughs in photonics, mechanics, and acoustics. A common way of inducing higher-order topological wave phenomena is through pseudo-spins, which mimic the electron spins as a symmetry-breaking degree of freedom. Here, this work exploits degenerate orbitals in acoustic resonant cavities to demonstrate versatile, orbital-selective, higher-order topological corner states. Type-II corner states are theoretically investigated and experimentally demonstrated based on tailored orbital interactions, without the need for long-range hoppings that has so far served as a key ingredient for Type-II corner states in single-orbital systems. Due to the orthogonal nature of the degenerate p orbitals, this work also introduces a universal strategy to realize orbital-dependent edge modes, featuring high-Q edge states identified in bulk bands. These findings provide an understanding of the interplay between acoustic orbitals and topology, shedding light on orbital-related topological wave physics, as well as its applications for acoustic sensing and trapping
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|a Journal Article
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|a acoustics
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| 650 |
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4 |
|a corner states
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| 650 |
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|a higher‐order topology
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| 650 |
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|a topological insulators
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| 650 |
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4 |
|a topological phononics
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| 700 |
1 |
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|a Peng, Yu-Gui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xiang, Xiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ni, Xiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Chen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yves, Simon
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Xue-Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Alù, Andrea
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 23 vom: 03. Juni, Seite e2312421
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:23
|g day:03
|g month:06
|g pages:e2312421
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|u http://dx.doi.org/10.1002/adma.202312421
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