  Magnetic correlations in superconducting LiFeAs were studied by elastic and
by inelastic neutron scattering experiments. There is no indication for static
magnetic ordering but inelastic correlations appear at the incommensurate wave
vector (0:5+-d 0:-+d 0) with d=0.07 slightly shifted from the commensurate
ordering observed in other FeAs-based compounds. The incommensurate magnetic
excitations respond to the opening of the superconducting gap by a transfer of
spectral weight.
