Abstract
We report on resistivity and Hall measurements in thin films of the electron-doped superconducting cuprate . Comparisons between 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.
- Received 9 December 2005
DOI:https://doi.org/10.1103/PhysRevB.73.104510
©2006 American Physical Society