Some information on acoustic topological insulator

TL;DR

This review explains the concept of acoustic topological insulators, focusing on engineered acoustic spin states and emergent Dirac physics, providing pedagogical insights into their fundamental properties and recent developments.

Contribution

It offers a concise overview of acoustic topological insulators, highlighting the engineering of acoustic spin-half states and the emergence of Dirac physics, which are novel in the field.

Findings

Engineered acoustic spin-half states maintain time reversal symmetry.

Emergent Dirac physics is observed in acoustic topological insulators.

The review provides pedagogical explanations of complex topological concepts.

Abstract

In this exceedingly short review article, we have provided some information on acoustic topological insulator for pedagogical purpose. Since, intrinsically acoustic systems do not have Kramers doublets due to spin-zero status, artificially acoustic spin-half states could be engineered as reported in refs. 5-26 maintaining time reversal symmetry. The high point of this article is an explanation of emergent Dirac physics in acoustic topological insulators.