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

Role of oxygen in the electron-doped superconducting cuprates

Superconductivity 2009-11-11 v1

Authors: 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 $_{4\pm\delta}$ . 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.

Keywords

electron-doped cuprates oxygen content resistivity Hall effect superconductivity

Cite

@article{arxiv.cond-mat/0602142,
  title  = {Role of oxygen in the electron-doped superconducting cuprates},
  author = {J. S. Higgins and Y. Dagan and M. C. Barr and B. D. Weaver and R. L. Greene},
  journal= {arXiv preprint arXiv:cond-mat/0602142},
  year   = {2009}
}

Comments

5 pages, 5 figures

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