Presentation Information
[10a-E207-2]Design of a pseudo-chiral waveguide based on a spirally stacked Kagome lattice
〇(DC)Yusuke Hata1, Yuri Fukaya1, Kenji Tsuruta1 (1.Okayama Univ.)
Keywords:
topological insulator,phononic crystal,elastic wave
Elastic waves, characterized by low propagation velocity and minimal thermal energy loss, are regarded as a promising platform for compact and energy-efficient device applications. In this study, we demonstrate that pseudo-chiral propagation can be realized for a wave vector selected along the stacking direction in a three-dimensional structure formed by spirally stacked Kagome lattices. We further show that this structure possesses the properties of a higher-order Weyl semimetal, and discuss the feasibility of realizing unidirectional elastic waveguides.