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Science 12 August 2005:
Vol. 309. no. 5737, p. 1001
DOI: 10.1126/science.309.5737.1001a
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News of the Week

PHYSICS:
Physicists Get the Dope on Disorder in High-Temperature Superconductors

Adrian Cho

Measurements reported on page 1048 of this issue of Science reveal the source of much of the disorder within high-temperature superconductors: It's caused by oxygen "dopant" atoms strewn throughout the layered crystals--the same atoms that supply electric charges for the superconducting currents.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)