Abstract
Mang et al. observe a cubic (Nd,Ce)2O3 impurity phase grown epitaxially in annealed samples of electron-doped Nd2−xCexCuO4 (NCCO). They claim that this impurity phase has long-range order parallel to the CuO2 planes of NCCO but extending only about 4ac perpendicular to the planes, thus forming a quasi-two-dimensional (Nd,Ce)2O3 lattice matched with the a–b plane of NCCO.
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References
Matsuura, M. et al. Phys. Rev. B 68, 144503 (2003).
Kang, H. J. et al. Nature 423, 522–525 (2003).
Fujita, M., Matsuda, M., Katano, S. & Yamada, K. Physica B (in the press).
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Kang, H., Dai, P., Lynn, J. et al. Spurious magnetism in high-Tc superconductor. Nature 426, 140 (2003). https://doi.org/10.1038/426140a
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DOI: https://doi.org/10.1038/426140a
