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SCIENTIA SINICA Physica, Mechanica & Astronomica, Volume 51 , Issue 8 : 084321(2021) https://doi.org/10.1360/SSPMA-2021-0082

Spin-Chern insulator induced by pseudospin-orbit coupling in phononic crystals

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  • ReceivedMar 26, 2021
  • AcceptedApr 30, 2021
  • PublishedJul 5, 2021

PACS numbers

Abstract


Funded by

国家自然科学基金(11890701,11774275,11974120,11974005,12074128)


Contributions statement

同等贡献


References

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  • Figure 1

    (Color online) Acoustic spin-Chern insulator. (a) A 3D printing bilayer sample; (b) the unit cell; (c) the bulk band dispersion along high symmetry lines. Inset: the first Brillouin zone; (d), (e) the projected band dispersions on the whole-cell and half-cell boundaries, respectively. Adapted from ref. [25] with permission.

  • Figure 2

    (Color online) The robust transport and spin-flipping of the acoustic boundary states. (a) The simulated and measured field distributions for a sample possessing a rectangular defect. (b) The transmissions. The hexagon and square lines denote the simulated and measured ones for the defect path, while the circle line represents that for a sample having a straight path with the same length. (c) The schematic of the H-shaped phononic crystal. (d) The simulated transmissions from channel 1 to terminals 2 (S21), 3 (S31) and 4 (S41) in the H-shaped sample. (e), (f) The measured and simulated field distributions for the H-shaped sample with Lm=2a. Adapted from ref. [25] with permission.

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