Observation of quadrupole transitions and edge mode topology in an LC circuit network
Observation of quadrupole transitions and edge mode topology in an LC circuit network
Higher-order topological insulators belong to a recently discovered class of materials where nontrivial topology results in boundary states with a dimensionality two or more below that of the bulk. This work realizes a higher-order topological insulator in a circuit model. By using nonlinear elements, the authors demonstrate dynamical switching between …