Existence of corner modes in elastic twisted kagome lattices
Hrishikesh Danawe, Heqiu Li, Hasan B. Al Ba’ba’a, Şerife Tol
Abstract
This Letter investigates the emergence of corner modes in elastic twisted kagome lattices at a critical twist angle, known as the self-dual point. We show that special types of corner modes exist and they are localized at very specific types of corners independent of the overall shape of the finite lattice. Moreover, these modes appear even in the perturbed lattice at the corners with mirror planes. By exploring their counterparts in electronic systems, we attribute such corner modes to charge accumulation at the boundary, which is confirmed by the plot of charge distribution in a finite lattice.
Topics & Concepts
PhysicsClassical mechanicsTheoretical physicsCondensed matter physicsTopological Materials and PhenomenaAdvanced Condensed Matter PhysicsRandom lasers and scattering media