Fig. 2: Schematic phase diagram of superconductors.
From: Universal flux patterns and their interchange in superconductors between types I and II
on the κ-T plane, where κ is the Ginzburg-Landau (GL) parameter and T is the temperature (in the units of the critical temperature Tc); the representative vortex configurations are shown in the insets. The lower and upper boundaries of the intertype domain, \({\kappa }_{\min }\) and \({\kappa }_{\max }\), are calculated for a conventional s-wave superconductor with a single spherical Fermi surface.
