Multigap Superconductivity in the Ferromagnetic Superconductor UCoGe Revealed by Thermal Conductivity Measurements

Figure 4

Field dependence of the ratio : (a) (red squares) and (b) (orange circles). (c) Comparison between (see text) of UCoGe and the single gap superconductor Nb (black squares [19]) and the two-band superconductors (green triangles [10]), (blue diamonds [21]), and (violet stars [21]). of UCoGe is taken as 25 Tesla in (c).

(a)

(b)

(c)