Material characterization of superconducting T′-Nd2CuO4 films synthesized by metal organic decomposition |
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| Authors: | O Matsumoto A Tsukada H Yamamoto T Manabe M Naito |
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| Institution: | 1. Department of Applied Physics, Tokyo University of Agriculture and Technology, Naka-cho 2-24-16, Koganei, Tokyo 184-8588, Japan;2. Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305, USA;3. NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan;4. National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan |
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| Abstract: | Recently we have achieved superconductivity in T′-RE2CuO4 (RE = Pr, Nd, Sm, Eu, and Gd), films by metal organic decomposition (MOD). In this article, we first report the cation off-stoichiometry effect, which aims at screening out the possibility of hole doping by cation deficiencies. We also investigated the structure and microstructure of superconducting T′-Nd2CuO4 films synthesized by MOD. This investigation aims at elucidating why MOD-grown Nd2CuO4 films become superconducting whereas our previous Nd2CuO4 films grown by molecular beam epitaxy were not superconducting. |
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| Keywords: | High-Tc superconductivity Mother compounds Nd2CuO4 structure Apical oxygen |
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