Spin-filtering could be the key to faster, more energy-efficient switching in future spintronic technology, allowing the detection of spin by electrical rather than magnetic means.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/spinwaves.jpg)
Source:
https://phys.org/news/2020-12-electrical-filtering-key-ultra-fast-energy-efficient.html