论文标题
二阶机械拓扑绝缘子中的角状态
Corner states in second-order mechanical topological insulator
论文作者
论文摘要
我们在数值和实验上研究的角状态在连续的弹性板中，具有六角形模式的EM隔板螺栓。在保留C6晶体对称性的同时，系统可以从拓扑上的微不足道过渡到非平凡的配置。我们通过毗邻的琐碎和非平凡的拓扑结构来创建60°和120°的界面角。由于螺栓与连续的弹性板之间的相互作用丰富，我们发现有或没有拓扑来源的各种角状态。值得注意的是，某些角状态是高度局部和可调的。通过利用这一特性，我们通过实验表明在Z形域壁上的单向角定位。
We numerically and experimentally study corner states in a continuous elastic plate with em-bedded bolts in a hexagonal pattern. While preserving C6 crystalline symmetry, the system can transition from a topologically trivial to a non-trivial configuration. We create interfacial corners of 60° and 120° by adjoining trivial and non-trivial topological configurations. Due to the rich interaction between the bolts and the continuous elastic plate, we find a variety of corner states with and without topological origin. Notably, some of the corner states are highly localized and tunable. By taking advantage of this property, we experimentally demonstrate one-way corner localization in a Z-shaped domain wall.
