title: The effect of Co doping on antiferromagnetic correlations in the Kondo semi-metal CeNiSn.
abstract: Single-crystal neutron scattering experiments have been performed to study magnetic excitations in [Formula: see text], in which the pseudo-gap of CeNiSn is suppressed by the doping. In CeNiSn there are two inelastic excitation peaks at [Formula: see text] and 4 meV, which correspond to dynamic antiferromagnetic correlations. In [Formula: see text] the 2 meV peak is smeared out, whereas the 4 meV peak becomes very weak and broad, but preserves the same quasi-one-dimensional character as that for CeNiSn. These results suggest the strong relation between the antiferromagnetic correlations and the pseudo-gap formation.
authors.affiliation: Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan.
authors.forename: T J
authors.initials: TJ
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Kadowaki
authors.forename: H
authors.initials: H
authors.lastname: Yoshizawa
authors.forename: T
authors.initials: T
authors.lastname: Takabatake
authors.forename: H
authors.initials: H
authors.lastname: Fujii
authors.forename: Y
authors.initials: Y
authors.lastname: Isikawa