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Comment by westurner

Comment

Comment by westurner

From the article:

> Candidate 1: Designed a Luttinger Compensated Magnet, YBaMnFeO₅

> Candidate 2: Identified a Luttinger Compensated Magnet in KV[Cr(CN)₆] from 1999

> KV[Cr(CN)₆] belongs to the same family as Prussian blue, the 300-year-old pigment.

An actual validation would be complex; so let's try and see what parts of this argument are grounded and feasible?

/? Prussian blue antiferromagnetic: https://scholar.google.com/scholar?q=Prussian+blue+antiferro... :

- a number of articles confirming antiferromagnetic effects

/? Luttinger-compensated Prussian blue:

- "Luttinger-compensated bipolarized magnetic semiconductor" (2025) https://journals.aps.org/prb/abstract/10.1103/9syc-71w8 .. "[2502.18136] Luttinger compensated bipolarized magnetic semiconductor" https://arxiv.org/abs/2502.18136 :

> The Luttinger compensated magnetism not only has the zero total magnetic moment as the antiferromagnetism, but also has the -wave spin splitting as the ferromagnetism, thus our work not only provides theoretical guidance for searching Luttinger compensated magnetic materials with distinctive properties, but also provides a material basis for the application in spintronic devices.

/? Luttinger-compensated : https://www.google.com/search?q=Luttinger-compensated

We could model this as a logical proof that's checkable also in lieu of doing actual work to confirm or reject the (AI) hypothesis, but first let's reason about the feasibility:

Are the described effects real?

Are there reported, reputable similar findings in similar materials?

So, at least the blue one could really work. Like it's 1999.

---

Without even validating the argument, what else do we think we know about this problem?

Did the authors know that there is a laser way to laser program the normally random domains of a magnet or antiferromagnet?

But is this going to be lower-cost and more sustainable than carbon-based room-temperature semiconductor computing, and does anyone know whether that will work yet (with ABC stacking in trilayer and pentalayer rhombohedral graphene) either?

I guess we can follow up later by searching for citations that reference this article that does not have DOI (which are free from Zenodo and FigShare).

Have we sufficiently reasoned or inferred whether the study is repeatable and reproducible?

At least we didn't inappropriately reject the hypothesis without experimentation or evidence

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