AI Summary

Researchers reported in Nature Communications that they have created an “anti‑spin ice,” a magnetic system that deliberately violates the ice rule governing conventional spin ices. In ordinary spin ices, magnetic moments follow the same two‑in, two‑out arrangement that water‑ice oxygens use to keep two hydrogen atoms close and two farther away, leading to many equally viable configurations and disorder. The new anti‑spin ice breaks this rule, producing a contrasting ordered state that does the opposite of the typical spin‑ice behavior.

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