Pair breaking in iron pnictides

V. G. Kogan
2009 Physical Review B  
The puzzling features of the slopes of the upper critical field at the critical temperature T_c, H^'_c2(T_c)∝ T_c, and of the specific heat jump Δ C∝ T_c^3 of iron-pnictides are interpreted as caused by a strong pair-breaking.
doi:10.1103/physrevb.80.214532 fatcat:26cuz64pefajrklcpkokwm6sva