Heuristic bounds on superconductivity and how to exceed them
Heuristic bounds on superconductivity and how to exceed them
Abstract What limits the value of the superconducting transition temperature ( T c ) is a question of great fundamental and practical importance. Various heuristic upper bounds on T c have been proposed, expressed as fractions of the Fermi temperature, T F , the zero-temperature superfluid stiffness, ρ s (0), …