Spin-singlet superconductivity with multiple gaps in PrFeAsO0.89F0.11

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

We report As-75 and F-19 NMR studies on the superconducting properties of the newly discovered compound PrFeAsO0.89F0.11 (T-c = 45 K). The Knight shift in the direction of H parallel to 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. Copyright (c) EPLA, 2008.

Europhysics Letters

EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY

83

5

57001-p1

57001-p4

10.1209/0295-5075/83/57001

https://doi.org/10.1209/0295-5075/83/57001
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