Journal
NATURE
Volume 412, Issue 6844, Pages 316-318Publisher
MACMILLAN PUBLISHERS LTD
DOI: 10.1038/35085536
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Ferromagnetism and superconductivity are thought to compete in conventional superconductors, although in principle it is possible for any metal to become a superconductor in its non-magnetic state at a sufficiently low temperature. At pressures above 10GPa, iron is known to transform to a non-magnetic structure(1,2) and the possibility of superconductivity in this state has been predicted(3,4). Here we report that iron does indeed become superconducting at temperatures below 2 K at pressures between 15 and 30 GPa. The transition to the superconducting state is confirmed by both a drop in resistivity and observation of the Meissner effect.
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