Opus 5.5 agents discover two room-temperature magnetic semiconductor candidates

In one line

We are sharing two candidate magnets for next-generation computer memory, found by a team of Claude Opus 5.5 agents. Both are predicted to have zero net magnetism yet still sort electrons by spin: one a new compound we designed, the other a material first made in 1999.

Opening excerpt

We’re all used to two types of magnet. The common one, the fridge magnet, is ferromagnetic — its atomic magnets all point the same way (up or down), adding their magnetic effects. The less well known one, the antiferromagnet (AF), has neighbouring atomic magnets that point opposite ways and exactly cancel out magnetically.

For a long time, there’s been an intense drive in computer memory research to create materials in between these two extremes. For this purpose, it helps to have a clear picture of what these extremes mean.

Today, I’ll share what we found. A team of AI agents and I designed one candidate magnet and found another, first made in 1999, that our calculations predict has the properties we were after.

But before diving into the details, let me first lay out a magnet primer that takes all of 90 seconds, assuming you are not an undergraduate in physics or chemistry.

(Excerpted from the original; full article via the source link below.)

This story hit the Hacker News front page today (95 points / 84 comments, via vals.ai). Our Tech Radar aggregates daily signals on AI engineering, backend architecture and DevOps — browse the related services and further reading below, or get in touch with our team.