Physics – Condensed Matter – Superconductivity
Scientific paper
2008-11-12
Physics
Condensed Matter
Superconductivity
12 pages, 4 figures; International Symposium on Superconductivity (ISS) 2008
Scientific paper
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.
Manabe Takaaki
Matsumoto Osamu
Naito Michio
Tsukada Akio
Utsuki Aya
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