NMR study of the impurity effects in noncentrosymmetric superconductors Li-2(Pd,Pt)(3)B

K. Arima
K. Matano
S. Harada
G. Z. Bao
Y. Inada
G. Q. Zheng

We report B-11 nuclear magnetic resonance (NMR) studies of the impurity effect in noncentrosymmetric superconductors Li2Pt3B and Li2Pd3B. We substitute B with Al, and find that the full width of half maximum (FWHM) of the NMR spectrum increases with increasing Al content. The superconducting transition temperature (T-c) of Li2Pt3 B1-xAlx decreases drastically with increasing non-magnetic impurity (Al) content, while it is hardly affected in Li2Pd3 B(1-x)A(l)x. These results provide new evidence for superconducting gap with line nodes in Li2Pt3B.

10th International Conference on Materials and Mechanisms of Superconductivity (M2S-X)

IOP PUBLISHING LTD

449

012034-1

012034-3

10.1088/1742-6596/449/1/012034

https://doi.org/10.1088/1742-6596/449/1/012034
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