Study of low-energy magnetic excitations in single-crystalline CeIn3 by inelastic neutron scattering

Inelastic neutron scattering experiments were performed on single crystals of the heavy-fermion compound CeIn3 for temperatures below and above the Neel temperature, TN. In the antiferromagnetically ordered phase, well-defined spin-wave excitations with a bandwidth of 2 meV are observed. The spin waves coexist with quasielastic (QE) Kondo-type spin fluctuations and broadened crystal-field (CF) excitations below TN. Above TN, only the QE and CF excitations persist, with a weak temperature dependence. N.B. Owing to an error in the publishing process, figure 1 of this paper was identical to figure 2. This was corrected on 03/06/03.