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

doi:10.1209/0295-5075/83/57001

Spin-singlet superconductivity with multiple gaps in PrFeAsO _0.89F_0.11

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

Research output: Contribution to journal › Article › peer-review

205 Citations (Scopus)

Abstract

We report ⁷⁵As and ¹⁹F NMR studies on the superconducting properties of the newly discovered compound PrFeAsO _0.89F_0.11 (T_c=45 K). The Knight shift in the direction of H∥ab-plane decreases below T_c 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 T_c, with nodes in the gap function.

Original language	English
Article number	57001
Journal	EPL
Volume	83
Issue number	5
DOIs	https://doi.org/10.1209/0295-5075/83/57001
Publication status	Published - Sep 1 2008

ASJC Scopus subject areas

Physics and Astronomy(all)

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