NMR studies of Nd2−xCexCuO4

Doyle, S.M. and Dupree, R. and Howes, A.P. and Paul, D.M. and Smith, M.E. (1991) NMR studies of Nd2−xCexCuO4. Bulletin of Materials Science, 14 (3). pp. 619-623. ISSN 0250-4707

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Copper NMR has been studied as a function of temperature in a number of superconducting Nd2−xCexCuO4 samples. The electric field gradient is very small and the Knight shift is 2380 ppm at room temperature, both of these implying that the copper is in a Cu+ state. The Knight shift decreases with temperature particularly below Tc. The spin contribution to the Knight shift is estimated to be ∼ 200 ppm (about a factor ten smaller than in YBa2Cu3O7) indicating that Ns(EF) at the copper sites is small in this material. © 1991, Indian Academy of Sciences. All rights reserved.

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04 Jan 2019 11:15
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