Chinese Physics B, Volume. 29, Issue 10, (2020)
Acoustic topological phase transition induced by band inversion of high-order compound modes and robust pseudospin-dependent transport
Fig. 1. Schematic view of a triangular phononic crystal consisting of snowflake-like metamolecules. Red dashed hexagon indicates the primitive cell composed by one cylindrical iron rod and six three-legged iron rods embedded in an air host.
Fig. 2. (a) Band structure for the triangular phononic crystal with rotational angle
Fig. 3. (a)–(c) Band structures for the triangular phononic crystals with different rotational angles: (a)
Fig. 4. (a) Schematic view of a ribbon-shaped supercell composed of the topologically nontrivial crystal (
Fig. 5. (a) Schematic view of a point-like chiral source consisting of eight antennas, which has a phase difference of
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Yan Li, Yi-Nuo Liu, Xia Zhang. Acoustic topological phase transition induced by band inversion of high-order compound modes and robust pseudospin-dependent transport[J]. Chinese Physics B, 2020, 29(10):
Received: Jul. 2, 2020
Accepted: --
Published Online: Apr. 21, 2021
The Author Email: Li Yan (liyanQFNU@163.com)