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Effect of Antiferromagnetic Planes on the Superconducting Properties of Multilayered High-Tc Cuprates

M. Mori, S. Maekawa

DOI 10.1103/PhysRevLett.94.137003 · Physical Review Letters

T1

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Abstract

We propose a mechanism for high critical temperature (Tc) in the coexistent phase of superconducting (SC) and antiferromagnetic (AFM) CuO2 planes in multilayered cuprates. The Josephson coupling between the SC planes separated by an AFM insulator (Mott insulator) is calculated perturbatively up to the fourth order in terms of the hopping integral between adjacent CuO2 planes. It is shown that the AFM exchange splitting in the AFM plane suppresses the so-called π-Josephson coupling, and the long-ranged 0-Josephson coupling leads to coexistence with a rather high value of Tc.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
HgBa2Ca4Cu5Oy

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100Pressure not reportedunknown
HgBa2Ca4Cu5Oy

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

108Pressure not reportedunknown
TlBa2Ca4Cu5Oy

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

100Pressure not reportedunknown
TlBa2Ca4Cu5Oy

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

108Pressure not reportedunknown
La1.85Sr0.15CuO4

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—Pressure not reportedunknown

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