Altermagnet paired with superconductor can carry spin currents without energy loss (superconductivity)

https://phys.org/news/2026-03-superconducting-altermagnets-energy-loss.html#google_vignette

"moving information (electron's spin) moves its charge generating heat through resistance, solved using  altermagnets: no net magnetism like antiferromagnets but possess spin-split electronic bands like ferromagnets...  interplay between these polarizes Cooper pairs enabling electron movement more easily in some directions than others for highly directed, lossless energy flow... data processed using spintronics rather than charge: stable, higher-temperature quantum computers 1,000X faster using fraction of power"

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