Figure 4: Analysis of Hc2 of URhGe.
From: Pairing mechanism in the ferromagnetic superconductor UCoGe
(a) closed symbols, λ(H) in URhGe along b,c-axis. Data along b extracted from Hc2, data along c extracted from the specific heat of ref. 44 (see Methods). Solid line: λ(H) predicted by theory in ref. 17 with 
. Open symbols: λ(H) in UCoGe (same as in Fig. 2a) for comparison. (b) Solid line: Hc2//c in URhGe based on λ(H) obtained from the specific heat (see Fig. 4a). Broken line: for comparison, Hc2 with λ fixed at λ(0) (40% larger). Experimental data are from ref. 35. Circles: H//c; Squares: H//b; Diamonds: H//a. Note the much weaker anisotropy of Hc2 in URhGe compared with UCoGe (displayed on Fig. 1a).
