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

We report 75As and 19F NMR studies on the superconducting properties of the newly discovered compound PrFeAsO0.89F0.11 (Tc = 45 K). The Knight shift in the direction of $H\parallel ab$-plane decreases below Tc to almost zero, which indicates spin-singlet pairing. The temperature dependencies of both...

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Bibliographic Details
Published inEurophysics letters Vol. 83; no. 5; pp. 57001 - 57001(4)
Main Authors Matano, K, Ren, Z. A, Dong, X. L, Sun, L. L, Zhao, Z. X, Zheng, Guo-qing
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2008
EDP Sciences
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Summary:We report 75As and 19F NMR studies on the superconducting properties of the newly discovered compound PrFeAsO0.89F0.11 (Tc = 45 K). The Knight shift in the direction of $H\parallel ab$-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.
Bibliography:istex:05D4EDA7960E145CAC0BDD50A3988D2B0BF76928
publisher-ID:epl11180
ark:/67375/80W-9GVRH952-W
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/83/57001