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arXiv 0811.1857cond-mat.supr-con
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“电子掺杂的”T“型铜酸盐的通用phase diagram

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

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

摘要:

我们研究了电子掺杂的超导体,Nd 2-xCexCuO 4,使用金属有机物分解制备的薄膜的通用相图。经过仔细的氧还原处理,以消除间隙Oap原子,我们发现,Tc单调增加从24 K到29 K,从0.15减少到0.00的x,展示了一个非常不同的相图从以前的散装之一。在Oap“杂质”对T'型铜氧化物超导电性和磁性影响巨大的基础上,讨论了我们结果的意义。然后,我们得出结论,我们的结果代表了氧化学计量Nd 2-xCexCuO 4的通用相图。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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