Breached Superfluidity via P-Wave Coupling
  Anisotropic pairing between fermion species with different fermi momenta opens two-dimensional areas of gapless excitations, thus producing a spatially homogeneous state with coexisting superfluid and normal fluids. This breached pairing state is stable and robust for arbitrarily small mismatch and weak p-wave coupling. 
E. Gubankova, E.G. Mishchenko, F. Wilczek