Antiferromagnetic spin fluctuations in CeRhSn probed bySn 119 NMR
Author(s) -
Hideki Tou,
M. S. Kim,
T. Takabatake,
M. Sera
Publication year - 2004
Publication title -
physical review b
Language(s) - English
Resource type - Journals
eISSN - 1538-4489
pISSN - 1098-0121
DOI - 10.1103/physrevb.70.100407
Subject(s) - knight shift , antiferromagnetism , physics , condensed matter physics , spin (aerodynamics) , anisotropy , relaxation (psychology) , nuclear magnetic resonance , thermodynamics , quantum mechanics , superconductivity , psychology , social psychology
We have carried out $^{119}\mathrm{Sn}$ nuclear magnetic resonance (NMR) measurements on the quasi-Kagom\'e compound CeRhSn. We found that $^{119}\mathrm{Sn}$ Knight shift $(^{119}K)$ is highly anisotropic and shows Curie-Weiss type temperature $(T)$ dependence above $25\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. In this $T$ range, the NMR relaxation rate shows $^{119}(1∕{T}_{1})\ensuremath{\propto}\sqrt{T}$ and is enhanced by magnetic fluctuations. At low $T$'s, $^{119}K$ stays constant and the enhanced Korringa relation of $^{119}({T}_{1}T{K}^{2})=\mathrm{const}$ is observed, differently from the non-Fermi-liquid behavior observed for bulk measurements. The present NMR results suggest that antiferromagnetic spin fluctuations exist in CeRhSn.
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