Snowflake Topological Insulator for Sound Waves
arXiv:1701.06330 · doi:10.1103/PhysRevB.97.020102
Abstract
We show how the snowflake phononic crystal structure, which has been realized experimentally recently, can be turned into a topological insulator for sound waves. This idea, based purely on simple geometrical modifications, could be readily implemented on the nanoscale.
5 pages, 4 figures