[19a-A33-1~11] CS.4 Code-sharing Session of 3.10 & 3.11

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[19a-A33-4] Design of a Higher-order Weyl Phononic Crystal based on a Spiral Stacked Kagome Lattice

〇Yusuke Hata¹, Kenji Tsuruta¹ (1.Graduate School of Natural Science and Technology, Okayama Univ.)

Keywords:

topological insulator,phononic crystal,Weyl semimetal

We report the design of a higher-order Weyl phononic crystal that has hinge states by stacking Kagome lattice helically. The tight-binding model is constructed to investigate features of spiral stacked Kagome lattice. It is revealed that Weyl points appear at with the calculation of the unit cell. In the supercell analysis, hinge states appear between certain wavenumbers. We also report the actual design of phononic crystal with finite element method analysis.