Fig. 4: Superfluid density and gap symmetry for different structures.
From: Re1−xMox as an ideal test case of time-reversal symmetry breaking in unconventional superconductors
a, b, c, d The superfluid density [\({\rho }_{{\rm{sc}}}(T)\propto {\lambda }_{{\rm{eff}}}^{-2}(T)\)] as a function of reduced temperature T/Tc for Re1−xMox compounds with x = 0, 0.12, 0.23 (hcp-Mg) (a), x = 0.23(S), 0.23(A) (α-Mn) (b), x = 0.45 (β-CrFe) (c), and x = 0.60 (bcc-W) (d). Lines through the data represent fits to a nodeless s-wave model in the clean limit (see Eq. (7)). The two datasets in b refer to the non-centrosymmetric α-Mn-type samples prepared by arc melting [0.23(A)] and solid state reaction [0.23(S)] methods. Similar fit results are obtained when using a dirty-limit model, as shown in Supplementary Fig. 10. The error bars of \({\lambda }_{{\rm{eff}}}^{-2}(T)\) are the SDs obtained from the fits to Eq. (2) by the musrfit software package52.
