Universal pair-breaking in transition-metal-substituted iron-pnictide superconductors
Universal pair-breaking in transition-metal-substituted iron-pnictide superconductors
The experimental transport scattering rate was determined for a wide range of optimally doped transition metal-substituted FeAs-based compounds with the ThCr2Si2 (122) crystal structure. The maximum transition temperature Tc for several Ba-, Sr-, and Ca-based 122 systems follows a universal rate of suppression with increasing scattering rate indicative of a …