Figure 4
From: Unconventional superconductivity in Y5Rh6Sn18 probed by muon spin relaxation

(a) Zero-field μSR time spectra for Y5Rh6Sn18 measured across the superconducting transition temperature 3 K, are shown together with lines that are least squares fits to the data using Eq. (5). (b) shows the temperature dependence of the exponential relaxation rate measured in zero magnetic field of Y5Rh6Sn18. The lines are guides to the eye. The extra relaxation below Tc indicates additional internal magnetic fields and, consequently, suggests the superconducting state has broken time reversal symmetry. Longitudinal field μSR time spectrum taken at (c) 0.1 K and (d) 3.8 K in presence of various applied magnetic fields.