PerspectiveSUPERCONDUCTIVITY

A coexistence that CuO2 planes can see

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Science  14 Aug 2020:
Vol. 369, Issue 6505, pp. 775-776
DOI: 10.1126/science.aba9482

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Summary

Superconductivity is a zero-resistance quantum-coherent state with applications to sensing, powerful electromagnets, and computing. Some materials have mysterious reasons for becoming superconducting, which continues to drive interest in the topic. Cuprates exhibit the highest superconducting transition temperature (Tc) of known materials under ambient pressure, exceeding the boiling point of liquid nitrogen in many compounds. On page 833 of this issue, Kunisada et al. (1) show how a seldom-studied quintuple-layer cuprate, Ba2Ca4Cu5O10(F,O)2, can help uncover the elusive superconductivity mechanism in these high-temperature superconductors.

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