Upper critical field of CeCoIn5
  We present a detailed analysis of the upper critical field for CeCoIn5 under high pressure. We show that, consistently with other measurements, this system shows a decoupling between maximum of the superconducting transition temperature Tc and maximum pairing strength. This puts forward CeCoIn5 as an important paradigm for this class of unconventional, strongly correlated superconductors. 
Ludovic Howald, Georg Knebel, Dai Aoki, G\'erard Lapertot and   Jean-Pascal Brison
cond-mat.str-el cond-mat.supr-con