A neat study gives clear-cut evidence that when a wire made of a magnetic material such as iron is squashed to the atomic scale, the material's magnetism disappears via an exotic physical process.
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Korytár, R., Lorente, N. Lost magnetic moments. Nature 458, 1123–1124 (2009). https://doi.org/10.1038/4581123a
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DOI: https://doi.org/10.1038/4581123a
