The connection between Superconductors of Type I and II due polarons and   Itinerant Antiferromagnetism in weak's coupling regime
  In the weak regime, we suggest a model where superconductivity types I and II bind assuming an adiabatic hypothesis where the frequency of oscillation of free electrons is much smaller than of polarons coupled to phonons, and an itinerant antiferromagnetism appears. At the end of the article we derive an state's equation which is tested according to generic experimental data. 
Paulo S\'ergio de Abreu Bonfim
cond-mat.supr-con