Journal
PHYSICAL REVIEW APPLIED
Volume 10, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.10.014017
Keywords
-
Categories
Funding
- National Key RAMP
- D Program of China [2017YFA0303702, 2016YFB0700301]
- National Natural Science Foundation of China [11625418, 51732006, 11474158, 11604145, 51721001]
- China Postdoctoral Science Foundation [2016M591818]
- Jiangsu Postdoctoral Science Foundation [1601169C]
- Hong Kong Research Grant Council [AoE/P-02/12]
Ask authors/readers for more resources
Weyl points emerge as topological monopoles of Berry flux in the three-dimensional (3D) momentum space and have been extensively studied in topological semimetals. As the underlying topological principles apply to any type of waves under periodic boundary conditions, Weyl points can also be realized in classical wave systems, which are easier to engineer compared to condensed matter materials. Here, we demonstrate an acoustic Weyl phononic crystal by breaking space inversion (P) symmetry using a combination of slanted acoustic waveguides. We directly characterize the acoustic Weyl points by performing angle-resolved transmission measurements. We also observe acoustic Fermi arcs by scanning the distribution of surface waves and demonstrate robust one-way acoustic transport, where the surface waves can overcome a step barrier without reflection. This work lays a solid foundation for the basic research in 3D topological acoustic effects and may lead to potential acoustic devices and applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available