Generic phase diagram of "electron-doped" T' cuprates

Osamu Matsumoto; Aya Utsuki; Akio Tsukada; Hideki Yamamoto; Takaaki Manabe; Michio Naito

doi:10.1016/j.physc.2009.05.100

Generic phase diagram of "electron-doped" T' cuprates

Superconductivity 2015-05-13 v1

Authors: Osamu Matsumoto , Aya Utsuki , Akio Tsukada , Hideki Yamamoto , Takaaki Manabe , Michio Naito

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Abstract

We investigated the generic phase diagram of the electron doped superconductor, Nd2-xCexCuO4, using films prepared by metal organic decomposition. After careful oxygen reduction treatment to remove interstitial Oap atoms, we found that the Tc increases monotonically from 24 K to 29 K with decreasing x from 0.15 to 0.00, demonstrating a quite different phase diagram from the previous bulk one. The implication of our results is discussed on the basis of tremendous influence of Oap "impurities" on superconductivity and also magnetism in T' cuprates. Then we conclude that our result represents the generic phase diagram for oxygen-stoichiometric Nd2-xCexCuO4.

Keywords

electron-doped T' cuprates generic phase diagram superconductor oxygen reduction treatment interstitial Oap atoms

Cite

@article{arxiv.0811.1857,
  title  = {Generic phase diagram of "electron-doped" T' cuprates},
  author = {Osamu Matsumoto and Aya Utsuki and Akio Tsukada and Hideki Yamamoto and Takaaki Manabe and Michio Naito},
  journal= {arXiv preprint arXiv:0811.1857},
  year   = {2015}
}

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12 pages, 4 figures; International Symposium on Superconductivity (ISS) 2008

Generic phase diagram of "electron-doped" T' cuprates

Abstract

Keywords

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