Unconventional Superconductivity and Electron Correlations in the Cobalt Oxyhydrate NA0.35CoO2 · yH2O from Nuclear Quadrupole Resonance

Tatsuya Fujimoto, Guo Qing Zheng, Y. Kitaoka, R. L. Meng, J. Cmaidalka, C. W. Chu

研究成果: Article同行評審

148 引文 斯高帕斯(Scopus)


A 59 nuclear quadrupole resonance (NQR) measurement on cobalt oxyhydrate Na0.35CoO2·yH2O superconductor was performed. NQR measurements were carried out using a phase-coherent spectrometer. The spin-lattice relaxation rate follwed a Curie-Weiss type temperature variation in the normal state that indicated two-dimensional antiferromagnetic spin correlations. As the temperature decreased, the spin-relaxation rate also decreased with no coherence peak and indicated non-s-wave superconductivity that was consistent with the existence of line nodes in the gap function.

頁(從 - 到)470041-470044
期刊Physical review letters
出版狀態Published - 2004 一月 30

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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