Arrhenius behaviour of the degradation of the superconducting transition temperature

Abstract

The degradation of the superconducting transition temperature in A15 compounds produced by quenching from high temperatures is ascribed to site-antisite disorder. An Arrhenius relation is derived between this degradation and the quenching temperature. It is shown that measurements on the A15 compound V₃Ga and A15-like compound Yb₃Rh₄Sn₁₃ are in excellent agreement with this relation. From the slope of the Arrhenius plots the disordering energies are obtained.