Manifesto for a higher Tc -- lessons from pnictides and cuprates
  We explore energy scales, features in the normal state transport, relevant interactions and constraints for the pairing mechanisms in the high-Tc cuprates and Fe-pnictides. Based on this analysis we attempt to identify a number of attributes of superconductors with a higher T_c. Expanded version of the article published in Nature Physics, 7, 271 (2011). 
D. N. Basov, A.V. Chubukov
cond-mat.supr-con cond-mat.str-el