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

✍ Scribed by Sheng, Z. Z.; Hermann, A. M.; El Ali, A.; Almasan, C.; Estrada, J.; Datta, T.; Matson, R. J.

• Book ID: 120836996
• Publisher: The American Physical Society
• Year: 1988
• Tongue: English
• Weight: 178 KB
• Volume: 60
• Category: Article
• ISSN: 0031-9007
• DOI: 10.1103/PhysRevLett.60.937

✦ Synopsis

Stable and reproducible superconductivity has been unambiguously
observed in a new Tl-Ba-Cu-0 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.