Use rust to convey spin information, why not?

Authors of a recent Nature letter demonstrate that this simple antiferromagnetic insulator (haematite) conveys spin information order over distances of more than tens of micrometres. This mechanism transports spins as efficiently as the most promising complex ferromagnets. Their result could pave the way to electrically tunable, ultrafast, low-power, antiferromagnetic-insulator-based spin-logic devices that operate without magnetic fields at room temperature.

Source article: Lebrun et al., Tunable long-distance spin transport in a crystalline antiferromagnetic iron oxide, Nature 561(7722), 222 (2018).
View the article: https://rdcu.be/6uZ8 (view-only for all, PDF download for Nature subscribers)

Popular article (suitable for general public): www.sciencedaily.com/releases/2018/09/180913113833.htm

News suggested by: Lucian Prejbeanu (Spintec, France).