Superconductivity and magnetism in (R1.5−xPrxCe0.5)Sr2Cu2NbO10−δ (R=Nd,Sm,Eu): Criteria for modeling the suppression of superconductivity by Pr in high-Tc cuprates
T. J. Goodwin, H. B. Radousky, R. N. Shelton
DOI 10.1103/PhysRevB.56.5144 · Physical Review B
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Abstract
We report on the electronic and magnetic phase diagram for (R1.5−xPrxCe0.5)Sr2Cu2NbO10−δ (R=Nd,Sm,Eu). The results indicate that Pr suppresses superconductivity in these materials in the same manner as in the (R1−xPrx)Ba2Cu3O7 compounds and that this suppression is correlated with anomalous Pr magnetism, a reduced Pr effective moment, a metal-to-insulator transition, and an ion size effect. The significance of these results in terms of a generalization of this phenomenon, the criteria they establish for modeling these materials, and the role of f-electron hybridization is discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (Nd1.5-xPrxCe0.5)Sr2Cu2NbO10-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (Sm1.5-xPrxCe0.5)Sr2Cu2NbO10-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (Eu1.5-xPrxCe0.5)Sr2Cu2NbO10-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (R1-xPrx)Ba2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (R1.5Ce0.5)Sr2Cu2NbO10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (Y1-xPrx)Ba2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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