The effect of Co doping on antiferromagnetic correlations in the Kondo semi-metal CeNiSn |
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Authors: | Sato T J Kadowaki H Yoshizawa H Takabatake T Fujii H Isikawa Y |
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Institution: | Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan. |
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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. |
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