Propagating Spin Waves in {{Ni}} above ${T}_{c}$: {{Evidence}} against Their Existence
Abstract:
We have reexamined the spin-wave peaks recently reported by Mook and Lynn for Ni above Tc. We present comprehensive neutron scattering measurements for the intermediate $\zeta$ range between 0.10 and 0.18. No evidence for spin-wave peaks is found for the energy range below 50 meV.