Fig. 4: The superconducting parameters.
From: Superconductivity above 200 K discovered in superhydrides of calcium
The Ginzburg Landau fitting for the Hc2(T) shown with the solid lines. The stars represent the Hc2(0) values calculated via WHH model. The inset of Fig. 4 is the critical field Hc2(T) as a function of Tc with the Tc values determined by the criteria of the Tconset, 90 and 50% of normal state resistance, respectively.
