Three-dimensional topological acoustic crystals with pseudospin-valley coupled saddle surface states

Cheng He; Si-Yuan Yu; Hao Ge; Huaiqiang Wang; Yuan Tian; Haijun Zhang; Xiao-Chen Sun; Y. B. Chen; Jian Zhou; Ming-Hui Lu; Yan-Feng Chen

doi:10.1038/s41467-018-07030-2

Nature Communications (Nov 2018)

Three-dimensional topological acoustic crystals with pseudospin-valley coupled saddle surface states

Cheng He,
Si-Yuan Yu,
Hao Ge,
Huaiqiang Wang,
Yuan Tian,
Haijun Zhang,
Xiao-Chen Sun,
Y. B. Chen,
Jian Zhou,
Ming-Hui Lu,
Yan-Feng Chen

Affiliations

Cheng He: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Si-Yuan Yu: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Hao Ge: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Huaiqiang Wang: National Laboratory of Solid State Microstructures & School of Physics, Nanjing University
Yuan Tian: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Haijun Zhang: Collaborative Innovation Center of Advanced Microstructures, Nanjing University
Xiao-Chen Sun: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Y. B. Chen: National Laboratory of Solid State Microstructures & School of Physics, Nanjing University
Jian Zhou: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Ming-Hui Lu: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University
Yan-Feng Chen: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University

DOI: https://doi.org/10.1038/s41467-018-07030-2
Journal volume & issue: Vol. 9, no. 1
pp. 1 – 7

Abstract

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Valley states can be used to realise topologically protected transport. Here, He et al. show that considering additional degrees of freedom, together with glide symmetry, allow the design of 2D acoustic topological pseudospin-valley coupled saddle surface states in 3D structures.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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