Abstract
A previously developed microscopic theory for the wavevector-dependent spin susceptibility chi (q) of paramagnetic iron based on the Hubbard-Hasegawa approach has been applied to nickel. The equal-time spin-spin correlation function evaluated with the use of the calculated chi (q) and the classical fluctuation-dissipation theorem accounts well for the observed feature in the integrated neutron scattering intensity. The magnitude of local magnetic moments and the spatial correlation function are also calculated by summing chi (q) over the FCC first Brillouin zone, and they are shown to be consistent with experimental data.
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