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Role of oxygen in the electron-doped superconducting cuprates

J. S. Higgins·Y. Dagan·M. C. Barr·B. D. Weaver·R. L. Greene
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Abstract

We report on resistivity and Hall measurements in thin films of the electron-doped superconducting cuprate Pr$_{2-x}$Ce$_{x}$CuO$_{4\pmδ}$. 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.

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J. S. Higgins, Y. Dagan, M. C. Barr, B. D. Weaver, R. L. Greene. 2006-02-06. Role of oxygen in the electron-doped superconducting cuprates. https://doi.org/10.1103/physrevb.73.104510

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