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Superconductivity at 90 K in the Tl-Ba-Cu-O system

Journal Article · · Phys. Rev. Lett.; (United States)
Stable and reproducible superconductivity has been unambiguously observed in a new Tl-Ba-Cu-O system containing no group-IIIB elements. Resistance in these rare-earth--free oxides starts to drop sharply above 90 K and reaches zero at 81 K. Meissner flux expulsion and diamagnetic shielding show bulk superconductivity. Further substitutions of elements for this system may lead to even higher-temperature superconductors.
Research Organization:
Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701
OSTI ID:
5311334
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:10; ISSN PRLTA
Country of Publication:
United States
Language:
English

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