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Nature 447, 537-539 (31 May 2007) | doi:10.1038/447537a; Published online 30 May 2007

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High-temperature superconductivity: Local pairs and small surfaces

Stephen R. Julian1 & Michael R. Norman2

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Mapping out the strange territory of high-temperature superconductors has proved a challenge. In the latest tour de force, two experiments take big steps forward, in complementary directions, to chart the lie of the land.

More than 20 years after they were first discovered, high-temperature superconductors remain fundamentally baffling. In superconductors, conduction without electrical resistance arises through the pairing of electrons so as to overcome obstacles to current flow.

  1. Stephen R. Julian is in the Department of Physics, University of Toronto, 60 St George Street, Toronto, Ontario M5S 1A7, Canada.
    Email: sjulian@physics.utoronto.ca
  2. Michael R. Norman is in the Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
    Email: norman@anl.gov

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