Abstract
We have performed neutron-scattering measurements on the single crystals of electron-doped cuprate, Pr0.89LaCe0.11CuO 4-δ in order to study the relationship between spin correlations and the superconductivity. In the non-superconducting as-grown x = 0.11 sample, clear magnetic Bragg peak appears below 200 K, while no evidence of antiferromagnetic order was found in the oxygen-reduced superconducting one (Tc = 25.5 K). These results imply that superconductivity concomitantly appears with the degradation of a magnetic ordering by oxygen-reduced procedure. Furthermore, we observed clear commensurate low-energy spin fluctuations, at the antiferromagnetic zone center in both as-grown and reduced samples, analogous to the result for Nd 1.85Ce0.15CuO4. Therefore, commensurate spin fluctuations are robust against the electron-doping and is commonly exist in the electron-doped superconductors.
Original language | English |
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Pages (from-to) | 130-134 |
Number of pages | 5 |
Journal | Physica C: Superconductivity and its applications |
Volume | 392-396 |
Issue number | PART 1 |
DOIs | |
Publication status | Published - 2003 Oct 1 |
Externally published | Yes |
Event | Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13 |
Keywords
- Electron-doped superconductor
- Neutron scattering
- Spin fluctuations
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering