Superconductivity above 90 K in the square-planar compound system ABa2Cu3O6+x with A=Y, La, Nd, Sm, Eu, Gd, Ho, Er and Lu

P. H. Hor, R. L. Meng, Y. Q. Wang, L. Gao, Z. J. Huang, J. Bechtold, K. Forster, C. W. Chu

研究成果: Article同行評審

846 引文 斯高帕斯(Scopus)

摘要

We have found superconductivity in the 90-K range in ABa2Cu3O6+x with A=La, Nd, Sm, Eu, Gd, Ho, Er, and Lu in addition to Y. The results suggest that the unique square planar Cu atoms, each surrounded by four or six oxygen atoms, are crucial to the superconductivity of oxides in general. In particular, the high Tc in ABa2Cu3O6+x is attributed mainly to the quasi two-dimensional assembly of the CuO2-Ba-CuO2+x-Ba-CuO2 layers sandwiched between two A layers, with particular emphasis in the CuO2+x layers. Higher-Tc oxides are predicted for compounds with bigger assemblies of CuO2 layers coupled by Ba-layers.

原文English
頁(從 - 到)1891-1894
頁數4
期刊Physical review letters
58
發行號18
DOIs
出版狀態Published - 1987

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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