Spin-singlet superconductivity with multiple gaps in PrFeAsO 0.89F0.11

K. Matano, Z. A. Ren, X. L. Dong, L. L. Sun, Z. X. Zhao, Guo Qing Zheng

Research output: Contribution to journalArticlepeer-review

213 Citations (Scopus)


We report 75As and 19F NMR studies on the superconducting properties of the newly discovered compound PrFeAsO 0.89F0.11 (Tc=45 K). The Knight shift in the direction of H∥ab-plane decreases below Tc to almost zero, which indicates spin-singlet pairing. The temperature dependencies of both the Knight shift and the spin lattice relaxation rate indicate that there are two gaps opening below Tc, with nodes in the gap function.

Original languageEnglish
Article number57001
Issue number5
Publication statusPublished - Sep 1 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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