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arXiv · 2311.06988

Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa$_2$

P. Sherpa·I. Vinograd·Y. Shi·S. A. Sreedhar·C. Chaffey·T. Kissikov·M. -C. Jung·A. S. Bontana·A. P. Dioguardi·R. Yamamoto·M. Hirata·G. Conti·S. Nemsak·J. R. Badger·P. Klavins·I. Vishik·V. Taufour·N. J. Curro
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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.

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P. Sherpa, I. Vinograd, Y. Shi, S. A. Sreedhar, C. Chaffey, T. Kissikov, M. -C. Jung, A. S. Bontana, A. P. Dioguardi, R. Yamamoto, M. Hirata, G. Conti, S. Nemsak, J. R. Badger, P. Klavins, I. Vishik, V. Taufour, N. J. Curro. 2023-11-12. Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa$_2$. https://doi.org/10.1103/physrevb.109.125113

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