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Nature 414, 696-697 (13 December 2001) | doi:10.1038/414696a

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High-temperature superconductivity: Charged with smuggling heat

Kamran Behnia

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Good conductors of heat are usually good at conducting electricity. So the discovery that electrons in a superconductor can carry an unauthorized amount of heat at low temperatures raises many questions.

Copper oxide compounds are noteworthy for the relatively high temperatures (up to 160 K) at which they lose their resistance to electrical currents and become superconducting. This was discovered by Bednorz and Müller1 in 1986, and gave birth to the field of 'high-temperature' superconductivity.