Higher-order topological corner state in a reconfigurable breathing kagome lattice consisting of magnetically coupled LC resonators.

ABSTRACT: Higher-order topological insulators are attracting attention from fundamental interest to fascinating applications, owing to the topological properties with higher-order topological corner states. Breathing kagome lattice is a prospective platform which can support higher-order topological corner states. Here, we experimentally demonstrate that higher-order topological corner states are supported in a breathing kagome lattice consisting of magnetically coupled resonant coils. The winding direction of each coil is determined to hold C₃ symmetry for each triangle unit cell, enabling to emerge higher-order topological corner states. In addition, topological and trivial phases can be switched by changing the distances between the coils. The emergence of corner states in the topologi

SUBMITTER: Yatsugi K 

PROVIDER: S-EPMC10205727 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature