  Inelastic neutron scattering experiments on Sr2RuO4 determine the spectral
weight of the nesting induced magnetic fluctuations across the superconducting
transition. There is no observable change at the superconducting transition
down to an energy of ~0.35 meV, which is well below the 2 delta values reported
in several tunneling experiments. At this and higher energies magnetic
fluctuations clearly persist in the superconducting state. Only at energies
below ~0.3 meV evidence for partial suppression of spectral weight in the
superconducting state can be observed. This strongly suggests that the
one-dimensional bands with the associated nesting fluctuations do not form the
active, highly gapped bands in the superconducting pairing in Sr2RuO4.
