Fig. 3: Superfluid density and anisotropy of Rb-12442.
From: Nodal multigap superconductivity in the anisotropic iron-based compound RbCa2Fe4As4F2
Temperature dependence of the normalized superfluid density measured with the CPWR technique on single crystals with x = 0, 0.03 and 0.05 (symbols) and their d − d BCS fits (lines). Inset shows the London penetration depth anisotropy (γλ) as a function of the normalized temperature for the three doping levels. The shaded bands around the lines represent the error of the reported γλ values (an illustrative error bar is also shown, for a single point of each curve), arising from the uncertainties of each λ measurement and their propagation.
