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arXiv · 0804.4026

19-F NMR Investigation of Iron-pnictide Superconductor LaFeAsO(0.89)F(0.11)

K. Ahilan·F. L. Ning·T. Imai·A. S. Sefat·R. Jin·M. A. McGuire·B. C. Sales·D. Mandrus
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Abstract

We report 19-F NMR investigation of the new high temperature superconductor LaFeAsO(0.89)F(0.11) (Tc ~ 28K). We demonstrate that low frequency spin fluctuations exhibit pseudo gap behavior above Tc. We also deduce the London penetration depth lambda from NMR line broadening below Tc.

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K. Ahilan, F. L. Ning, T. Imai, A. S. Sefat, R. Jin, M. A. McGuire, B. C. Sales, D. Mandrus. 2008-08-18. 19-F NMR Investigation of Iron-pnictide Superconductor LaFeAsO(0.89)F(0.11). https://doi.org/10.1103/physrevb.78.100501

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