Electrical signals reveal hidden magnetic information in altermagnets for first time

Experimentally demonstrated, for the first time, that it is possible to obtain from an altermagnet a spin current that can transport magnetic information. The science-journalism coverage adds useful context, while the strongest evidential footing still comes from the underlying data, papers or institutional documentation.

The significance lies in physics only takes a result seriously when the measurement chain remains robust under scrutiny. Experimental particle physics and precision metrology both operate in regimes where the signal sits far below the background noise, and where systematic uncertainties can mimic new physics if not controlled rigorously. The history of the field contains numerous anomalies that generated theoretical excitement before better data showed them to be artifacts, and it also contains genuine discoveries that were initially dismissed as noise. The difference is almost always resolved by independent replication with different instruments and different systematics. This article has been reviewed according to Science X's editorial process and policies. Elhuyar Fundazioa Researchers have experimentally demonstrated, for the first time, that it is possible to obtain from an altermagnet a spin current that can transport magnetic.

The results of this study have been published in the journal Nature. Although antiferromagnets have been known for almost a century, it was only recently that a new class of materials with compensated magnetic moments was identified: the.

This interaction enables the magnetic information to be converted into an electrical signal, thus providing a way to access it," points out Fèlix Casanova, Ikerbasque research. In the device developed, the altermagnet and detector are separated by just 300 nanometers, approximately one-hundredth the thickness of a human hair.

Next, "the team reversed the magnetic order of the material using strong magnetic fields, available in our laboratory, and observed that the detected signal also changes direction. This correspondence confirms that the electrical signal is linked to the altermagnet's internal magnetic information and allows us to rule out the possibility that it is due to.

The broader interest lies as much in the method as in the headline number, because a durable measurement procedure can travel farther than a single result. When experimental physicists develop a technique that achieves new sensitivity or controls a previously uncharacterized systematic, that methodological contribution persists even if the specific measurement is later revised. This is one reason why precision physics experiments often generate long-term value that is not immediately visible in the original publication.

Jone Mencos et al, Time-reversal-symmetry-breaking spin injection from a compensated magnet, Nature (2026). MA in English, copy editor since 2021 with experience in higher education and health content.

Because this item comes through Phys. org Physics as science journalism, it should be treated as contextual reporting rather than primary evidence. Good science reporting can identify why a result matters, connect it to the wider literature and make technical work readable, but the decisive evidence remains in the original paper, dataset, mission release or technical record. That distinction is especially important when a story is later repeated by aggregators, because repetition increases visibility, not evidential strength.

The next step is more measurement, tighter systematic control and scrutiny from groups whose experimental setups are genuinely independent. In experimental particle physics and precision metrology, the threshold for a discovery claim is a five-sigma excess surviving multiple analyses; an intriguing signal at lower significance is a reason to run more experiments, not a reason to revise the textbooks. Next-generation experiments currently under construction or commissioning will revisit several of the open questions that give the current result its context.

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