Abstract
The influence of Nd magnetic impurities on the spin dynamics of CeCoIn5 was studied by inelastic neutron scattering. In the Nd-substituted compound Ce0.95Nd0.05CoIn5, the spin resonance peak (observed at Ωres = 0.55 meV in the pure system) is shifted to lower energies but the ratio Ωres/kBTc remains almost unchanged. These observations are compared with non-magnetic La-substitution.
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