Neutron scattering as a probe of the Fe-pnicitide superconducting gap
  Inelastic neutron scattering provides a probe for studying the spin and momentum structure of the superconducting gap. Here, using a two-orbital model for the Fe-pnicitide superconductors and an RPA-BCS approximation for the dynamic spin susceptibility, we explore the scattering response for various gaps that have been proposed. 
T.A. Maier, D.J. Scalapino