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

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.

arXiv comment9 pages, 7 figures

References in corpus (21)

• Non-Abelian Anyons and Topological Quantum Computation
• Topological superconductors: a review
• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• S-wave/spin-triplet order in superconductors without inversion symmetry: Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Chiral Superconductors
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Three-band superconductivity and the order parameter that breaks time-reversal symmetry
• Non-unitary triplet pairing in the centrosymmetric superconductor LaNiGa${}_2$
• 125Te-NMR Study on a Single Crystal of Heavy Fermion Superconductor UTe2
• Hidden magnetism at the pseudogap critical point of a high temperature superconductor
• Spin-Triplet Superconductivity in K2Cr3As3
• Two-gap superconductivity in LaNiGa${}_2$ with non-unitary triplet pairing and even parity gap symmetry
• Antiferromagnetic fluctuations in the normal state of LiFeAs
• Quantitative Theory of Triplet Pairing in the Unconventional Superconductor LaNiGa${}_2$
• Electronic structure and electric-field gradients analysis in $CeI{n}_3$
• Dirac lines and loop at the Fermi level in the Time-Reversal Symmetry Breaking Superconductor LaNiGa${}_2$
• Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking
• Electric field gradients from first-principles and point-ion calculations
• Non-unitary multiorbital superconductivity from competing interactions in Dirac materials

Cited by in corpus (2)

• Pressure induced superconducting dome in LaNiGa2
• Observation of a pronounced Hebel-Slichter peak in the spin-lattice relaxation rate and implications for gap and pairing symmetry in LaNiGa${}_2$