Perplexing Compounds Rejoin the Club

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Science  25 Jan 2002:
Vol. 295, Issue 5555, pp. 604
DOI: 10.1126/science.295.5555.604a

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Fifteen years after the discovery of high-temperature superconductors, every theorist seems to have a different explanation for their strange properties. Now results of a laborious experiment, published online this week (, have solved a longstanding puzzle about the superconductors: why some, but not others, appeared to show a fundamental fingerprint of magnetic spin.