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arXiv · 1403.4458

31P NMR Investigation of the Superconductor LiFeP (Tc = 5 K)

Huiyuan Man·Shengli Guo·Guoxiang Zhi·Xin Gong·Quan Wang·Cui Ding·Yankang Jin·Fanlong Ning
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Abstract

We investigate the static and dynamic spin susceptibility of the 111 type Fe-based superconductor LiFeP with Tc ~ 5 K through the measurement of Knight shift 31K and the spin-lattice relaxation rate 1/T1 at 31P site by nuclear magnetic resonance. The constant 31K, small magnitudes of 1/T1T, along with the resistivity rho ~ T^2 all point to the weak spin correlations in LiFeP. 1/T1T display small enhancement toward Tc, indicating that the superconductivity is intimately correlated with the antiferromagnetic spin fluctuations.

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Huiyuan Man, Shengli Guo, Guoxiang Zhi, Xin Gong, Quan Wang, Cui Ding, Yankang Jin, Fanlong Ning. 2014-03-18. 31P NMR Investigation of the Superconductor LiFeP (Tc = 5 K). https://doi.org/10.1209/0295-5075%2F105%2F67005

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