Since their discovery in 2006, topological insulators have been widely discussed as a promising avenue for energy efficient electronics. Their unique high-mobility edge states have a form of “quantum armor” that protects them from electron-scattering events that would otherwise produce waste heat.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/60-researchersr.jpg)
Source:
https://phys.org/news/2019-12-reveal-wide-band-gap-topological.html