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Elastic pseudospin transport for integratable topological phononic circuits

Author

Listed:
  • Si-Yuan Yu

    (Nanjing University
    Nanjing University
    Jiangsu Key Laboratory of Artificial Functional Materials)

  • Cheng He

    (Nanjing University
    Nanjing University)

  • Zhen Wang

    (Nanjing University)

  • Fu-Kang Liu

    (Nanjing University)

  • Xiao-Chen Sun

    (Nanjing University)

  • Zheng Li

    (Nanjing University)

  • Hai-Zhou Lu

    (South University of Science and Technology of China)

  • Ming-Hui Lu

    (Nanjing University
    Nanjing University
    Jiangsu Key Laboratory of Artificial Functional Materials)

  • Xiao-Ping Liu

    (Nanjing University
    Nanjing University)

  • Yan-Feng Chen

    (Nanjing University
    Nanjing University)

Abstract

Precise control of solid-state elastic waves’ mode content and coherence is of great use nowadays in reinforcing mechanical energy harvesting/storage, nondestructive material testing, wave-matter interaction, high sensitivity sensing, and information processing, etc. Its efficacy is highly dependent on having elastic transmission channels with lower loss and higher degree of freedom. Here, we demonstrate experimentally an elastic analog of the quantum spin Hall effects in a monolithically scalable configuration, which opens up a route in manipulating elastic waves represented by elastic pseudospins with spin-momentum locking. Their unique features including robustness and negligible propagation loss may enhance elastic planar-integrated circuit-level and system-level performance. Our approach promotes topological materials that can interact with solid-state phonons in both static and time-dependent regimes. It thus can be immediately applied to multifarious chip-scale topological phononic devices, such as path-arbitrary elastic wave-guiding, elastic splitters and elastic resonators with high-quality factors.

Suggested Citation

  • Si-Yuan Yu & Cheng He & Zhen Wang & Fu-Kang Liu & Xiao-Chen Sun & Zheng Li & Hai-Zhou Lu & Ming-Hui Lu & Xiao-Ping Liu & Yan-Feng Chen, 2018. "Elastic pseudospin transport for integratable topological phononic circuits," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05461-5
    DOI: 10.1038/s41467-018-05461-5
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    Cited by:

    1. Hengjiang Ren & Tirth Shah & Hannes Pfeifer & Christian Brendel & Vittorio Peano & Florian Marquardt & Oskar Painter, 2022. "Topological phonon transport in an optomechanical system," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. Weitao Yuan & Chenwen Yang & Danmei Zhang & Yang Long & Yongdong Pan & Zheng Zhong & Hong Chen & Jinfeng Zhao & Jie Ren, 2021. "Observation of elastic spin with chiral meta-sources," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    3. Ji-Qian Wang & Zi-Dong Zhang & Si-Yuan Yu & Hao Ge & Kang-Fu Liu & Tao Wu & Xiao-Chen Sun & Le Liu & Hua-Yang Chen & Cheng He & Ming-Hui Lu & Yan-Feng Chen, 2022. "Extended topological valley-locked surface acoustic waves," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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