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Three is the optimal number

A trilayer copper oxide superconductor, which exhibits the highest superconducting critical temperature as a function of the number of copper–oxygen planes, is shown to have unusual doped hole distribution and interaction between the planes.

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Fig. 1: Phase diagram and Fermi surfaces of the trilayer cuprate superconductor.


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Correspondence to Atsushi Fujimori.

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Fujimori, A. Three is the optimal number. Nat. Phys. (2023).

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