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Superconductivity up to 126 Kelvin in Interstitially Doped Ba2Can-1CunOx [02(n-1)n-Ba]

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Science  22 Aug 1997:
Vol. 277, Issue 5329, pp. 1081-1083
DOI: 10.1126/science.277.5329.1081

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Abstract

A new high-temperature superconducting compound system, Ba2Can 1CunOx[02(n–1) n–Ba] interstitially doped with calcium or (Ca,Cu) has been identified to exhibit a transition temperature up to 126 kelvin, the highest for a superconductor without a volatile toxic element. 02(n–1)n–Ba has body-centered tetragonal symmetry and an unusual charge-reservoir block. The compounds offer interesting opportunities for high-temperature superconductivity science and technology.

  • * To whom correspondence should be addressed. E-mail: cwchu{at}uh.edu

  • On leave from National Taiwan University.

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