Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa$_2$
/ Authors
P. Sherpa, I. Vinograd, Y. Shi, S. Sreedhar, C. Chaffey, T. Kissikov, Min-Cheol Jung, A. S. Bontana, A. Dioguardi, R. Yamamoto
and 8 more authors
M. Hirata, G. Conti, S. Nemšák, J. Badger, P. Klavins, I. Vishik, V. Taufour, N. Curro
/ Abstract
We present nuclear magnetic (NMR) and qudrupole (NQR) resonance and magnetization data in the normal state of the topological crystalline superconductor LaNiGa$_2$. We find no evidence of magnetic fluctuations or enhanced paramagnetism. These results suggest that the time-reversal symmetry breaking previously reported in the superconducting state of this material is not driven by strong electron correlations.