Figure 7: Specific heat in UCoGe and URhGe.
From: Pairing mechanism in the ferromagnetic superconductor UCoGe
(a) Temperature dependence of Cp/T of UCoGe, for H//c. For magnetic fields close to 0 T, a small increase in Cp/T occurs when T approaches TCurie. The Cp/T curves are then fitted with a function Cp/T=γ+δ. exp(−T0/T) to obtain the associated Sommerfeld coefficient γ. (b) Field dependence of the Sommerfeld coefficient γ in UCoGe (magenta circles) for H//c, normalized to its zero field value. The same data for URhGe44 on the same field range, equally for H//c, are presented for comparison, with the blue squares.
