Neutron scattering study of antiferromagnetic correlations in the Kondo semiconductor CeNiSn

T. J. Sato, H. Kadowaki, H. Yoshizawa, T. Ekino, T. Takabatake, H. Fujii, L. P. Regnault, Y. Isikawa

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Abstract

Spin excitations in the Kondo semiconductor CeNiSn have been studied in a wide Q-range and in the energy range of h(cross) omega =1.2-7 meV by means of single-crystal neutron scattering. The magnetic fluctuation at low temperatures in this energy range is dominated by the easy a-axis component Im chi ad. Below the coherence temperature of 20 K, two dynamic antiferromagnetic correlations develop as excitation peaks at h(cross) omega =2 and 4 meV. The 4 meV excitation appears at Q=(Qa. 1/2 +n, Qc) where Qc and Qc are arbitrary and n is an integer, which indicates that the correlation is quasi-one dimensional along the b-axis. The 2 meV excitation appears around Q=(0,0,I) and (0,1,0), which shows three-dimensional Q-dependence. These two excitations reflect the nature of the Kondo coherent state of CeNiSn.

Original languageEnglish
Article number010
Pages (from-to)8009-8026
Number of pages18
JournalJournal of Physics: Condensed Matter
Volume7
Issue number41
DOIs
Publication statusPublished - 1995 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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    Sato, T. J., Kadowaki, H., Yoshizawa, H., Ekino, T., Takabatake, T., Fujii, H., Regnault, L. P., & Isikawa, Y. (1995). Neutron scattering study of antiferromagnetic correlations in the Kondo semiconductor CeNiSn. Journal of Physics: Condensed Matter, 7(41), 8009-8026. [010]. https://doi.org/10.1088/0953-8984/7/41/010