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Vals AI Says Claude Opus 5.5 Agents Proposed Two Room-Temperature Magnetic-Semiconductor Candidates

October 6, 2026 at 18:16 EDT

AI Agents
Research & Papers

Vals AI says researcher Geby Jaff and a team of Claude Opus 5.5 agents proposed two candidate room-temperature antiferromagnetic semiconductors in a three-day computational search: a newly designed oxide, YBaMnFeO5, and KV[Cr(CN)6], a Prussian-blue-type compound first synthesized in 1999. The work is a set of density-functional-theory predictions, not a lab-verified material result: neither candidate has measured band gap, conductivity or spin-resolved behavior yet.

Oct. 4, 2026 | Vals AI

AI agents flag two magnetic-semiconductor candidates

A three-day computational search produced one new oxide design and one 1999 Prussian-blue-type compound reinterpreted for spintronic memory. The story is promising, but still computational.

Spin sorting towers over room-temperature thermal energy

Hole spin windows from HSE06 calculations, compared on the same eV scale.

candidate materials

days of search

claims listed

computed passes

How the search was structured

Set target
room-temperature spin sorting

Run DFT
PBE+U and HSE06

Challenge claims
adversarial reviews and checks

Prioritize tests
remake and measure KV[Cr(CN)6]

Why it matters

The work offers a testable path toward magnetic semiconductors with near-zero net moment and spin-sorted band edges, plus enough raw calculation detail for outside checks.

What remains open

YBaMnFeO5 may be hard to make in the ordered form, and KV[Cr(CN)6] still needs direct band-gap, conductivity and spin-sorting measurements.

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