Role of oxygen in the electron-doped superconducting cuprates

Details Role of oxygen in the electron-doped superconducting cuprates Role of oxygen in the electron-doped superconducting cuprates

2006-02-06

arxiv.org/abs/cond-mat/0602142v1

Physics

Condensed Matter

Superconductivity

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.73.104510

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