作者: CW Chu , YY Xue , ZL Du , YY Sun , L Gao
DOI: 10.1126/SCIENCE.277.5329.1081
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摘要: 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 126 kelvin, the highest for superconductor without volatile toxic element. 02(n–1)n–Ba body-centered tetragonal symmetry and an unusual charge-reservoir block. The compounds offer interesting opportunities superconductivity science technology.