Question

Is topological insulators are quantum meta-material?

Answer 1

The first quadrupole topological insulator has been created in a mechanical metamaterial by physicists in switzerland. The experiment confirms a theoretical prediction made in 2017 that the concepts behind traditional dipole topological insulators can be extended to create higher multiple versions.

Answer 2

Hello mate here is your answer.

A topological insulator is amaterial with non-trivial symmetry-protected topologicalorder that behaves as aninsulator in its interior but whose surface contains conducting states, meaning that electrons can only move along the surface of the material.

Hope it helps you.