SLAC researchers report experimental proof of altermagnetism, a new magnetic phase

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Researchers at the SLAC National Accelerator Laboratory say they have found experimental evidence for altermagnetism, a previously theorized form of magnetic order. The phase is described as distinct from conventional ferromagnetic and antiferromagnetic states. The announcement was published on SLAC's website on October 29, 2026. The article provided to us contains only the link and basic metadata, so further technical details of the experiment are not available here. Readers are encouraged to consult SLAC's original announcement for the full findings.

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