Universal Scaling Relations in Molecular Superconductors

Scaling relations between the superconducting transition temperature T_c, the superfluid stiffness ρ_s, and the normal state conductivity σ₀(T_c) are identified within the class of molecular superconductors. These new scaling properties hold as T_c varies over 2 orders of magnitude for materials with differing dimensionality and contrasting molecular structure and are dramatically different from the equivalent scaling properties observed for cuprate superconductors. These scaling relations place strong constraints on theories for molecular superconductivity.