Imagine scientists created a completely new material by smashing two weird things together. One of these things was great at conducting electricity, and the other was a magnetic insulator.
When they squashed them and then blasted them with a super powerful magnet, something wild happened. The electricity in this new material suddenly started acting like a crazy highway system, only letting traffic go in certain directions. Then, when the magnet got even stronger, the traffic completely reversed!
This discovery is a huge deal. It’s like finding a secret key that could unlock all sorts of new technology. It might help us create amazing new sensors for everything from space exploration to medical devices, or even build the next generation of powerful quantum computers. It’s basically a brand-new toy box for scientists and engineers.