Discover room-temperature magnetic semiconductor candidates with agents
Opus 5.5 agents were used to identify two candidate room-temperature magnetic semiconductors, per the post's headline.
What they did
A team of Claude Opus 5.5 agents, working with the author, searched for Luttinger-compensated magnets. These are antiferromagnets with zero net magnetism whose electrons are still sorted by spin. The agents ran density functional theory simulations at two levels of approximation, PBE+U and HSE06. They designed one new compound, YBaMnFeO₅, and found a second, KV[Cr(CN)₆], in the literature from 1999.
How it went
Both are predicted to be semiconductors with spin windows far above room-temperature thermal energy. YBaMnFeO₅'s ordering likely collapses at synthesis temperatures. KV[Cr(CN)₆] remains unmeasured for band gap and spin sorting, and the two methods disagree on how water in the sample affects it.
Worth knowing
The results are predictions for perfect crystals only; the next step is to re-make KV[Cr(CN)₆] and measure it. Code and caveats are on GitHub.
Labels
They designed one new compound, YBaMnFeO₅, and found a second, KV[Cr(CN)₆], in the literature from 1999.
The agents ran density functional theory simulations at two levels of approximation, PBE+U and HSE06.
A team of Claude Opus 5.5 agents, working with the author, searched for Luttinger-compensated magnets.
The “Material” label failed its quality check and is not used for selection.
Details
- Agents
- custom-built or unnamed agent
- Source
- Hacker News
- Source date
- Oct 5, 2026
- Accounts
- 1
- In registry since
- Oct 12, 2026