Role of oxygen in the electron-doped superconducting cuprates
J. S. Higgins, Y. Dagan, M. C. Barr, B. D. Weaver, R. L. Greene
DOI 10.1103/PhysRevB.73.104510 · Physical Review B
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Abstract
We report on resistivity and Hall measurements in thin films of the electron-doped superconducting cuprate Pr2−xCexCuO4±δ. Comparisons between x=0.17 samples subjected to either ion irradiation or oxygenation demonstrate that changing the oxygen content has two separable effects: (1) a doping effect similar to that of cerium and (2) a disorder effect. These results are consistent with prior speculations that apical oxygen removal is necessary to achieve superconductivity in this compound.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr2-xCexCuO4±δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pr2-xCexCuO4±δ 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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