Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9841745 | Physica C: Superconductivity and its Applications | 2005 | 5 Pages |
Abstract
Zero-field muon-spin-relaxation measurements have been carried out in order to investigate the Zn- and Ni-substitution effects on the Cu-spin dynamics in the electron-doped Pr0.86LaCe0.14Cu1ây(Zn, Ni)yO4+αâδ with y = 0, 0.01, 0.02, 0.05 and different values of the reduced oxygen content δ (δ â¦Â 0.09). For the samples with y = 0 and very small δ values of δ < 0.01, a muon-spin precession due to the formation of a long-range antiferromagnetic order has been observed at low temperatures below â¼5 K. For the moderately oxygen-reduced samples of 0.01 â¦Â δ â¦Â 0.09, on the contrary, no muon-spin precession has been observed and the temperature dependence of the spectra is similar to one another regardless of the y value. That is, no impurity-induced slowing down of the Cu-spin fluctuations has been detected, which is very different from the results of the hole-doped high-Tc cuprates. The reason is discussed.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Risdiana Risdiana, T. Adachi, Y. Koike, I. Watanabe, K. Nagamine,