It's a very idealized system, close to magic than to a real system. They are interesting but most of them are very far away from an application. They have a layer of spins with 2 directions with coupling (that is usual), and then a layer of spins with directions in a lot of dimensions (like 15 IIUC) that is not usual.

As a sibling comment notes, the first layer of spins is usually made of atoms, and arranged in a crystal, and when the temperature is high enough the crystal will melt and you will not have the nice layer of spin anymore. The second layer is too close to magic, but I guess they will need to be supported by atoms and they will melt too.

Also, I don't understand how this system is related to superconductivity as they say in the article. I see no Cooper pairs, and my understanding of high temperature superconductivity is too weak, but it's about something line flux pinning and it doesn't look related at all.

> nobody knows what to do with it yet though.

I've sent a lengthy email to Atomic Rockets strongly suggesting that cloaking devices are back on the menu. No reply yet and I know I've said this a few dozen times before but I really think we got 'em this time!