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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.04563 |
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| _version_ | 1866912414709055488 |
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| author | Park, S. Sakai, H. Hosoi, S. Thomas, S. M. Kambe, S. Tokunaga, Y. Dioguardi, A. P. Thompson, J. D. Ronning, F. Kimata, M. Furukawa, T. Sasaki, T. Bauer, E. D. Hirata, M. |
| author_facet | Park, S. Sakai, H. Hosoi, S. Thomas, S. M. Kambe, S. Tokunaga, Y. Dioguardi, A. P. Thompson, J. D. Ronning, F. Kimata, M. Furukawa, T. Sasaki, T. Bauer, E. D. Hirata, M. |
| contents | YbV$_6$Sn$_6$ is a recently discovered kagome-lattice metal that orders at $T_{\rm N}\approx0.4$~K. Its layered structure combines a triangular Kondo lattice of Yb$^{3+}$ ions with vanadium-based kagome planes, which may host an interplay between strong correlations and band topology. We report a $^{51}$V nuclear magnetic resonance (NMR) study of the paramagnetic state of YbV$_6$Sn$_6$. Detailed field-angular dependence of single-crystal NMR spectra determined the principal-axis directions of the electric field gradient tensor at the $^{51}$V sites, as well as their nuclear quadrupole frequency, $ν_{\rm Q}$, and asymmetry parameter, $η$. The Knight shift, $K$, was measured for different field orientations, and the analysis of $K$ against magnetic susceptibility to extract anisotropic hyperfine couplings. Accurate spectral assignments further enabled measurements of the nuclear spin-lattice relaxation rate, $1/T_1$, for both in-plane and out-of-plane field directions. The temperature dependence of $1/T_1$ shows that out-of-plane spin fluctuations are suppressed below $\sim$20~K, whereas in-plane fluctuations are markedly enhanced, which might be understood by thermal depopulation of the low-lying crystalline electric field excited state. The notable anisotropy in $1/T_1$ indicates that the paramagnetic state of YbV$_6$Sn$_6$ is strongly affected by in-plane spin dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_04563 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigation of the Paramagnetic State of the Kagome Kondo Lattice Compound YbV$_6$Sn$_6$: a $^{51}$V Nuclear Magnetic Resonance Study Park, S. Sakai, H. Hosoi, S. Thomas, S. M. Kambe, S. Tokunaga, Y. Dioguardi, A. P. Thompson, J. D. Ronning, F. Kimata, M. Furukawa, T. Sasaki, T. Bauer, E. D. Hirata, M. Strongly Correlated Electrons YbV$_6$Sn$_6$ is a recently discovered kagome-lattice metal that orders at $T_{\rm N}\approx0.4$~K. Its layered structure combines a triangular Kondo lattice of Yb$^{3+}$ ions with vanadium-based kagome planes, which may host an interplay between strong correlations and band topology. We report a $^{51}$V nuclear magnetic resonance (NMR) study of the paramagnetic state of YbV$_6$Sn$_6$. Detailed field-angular dependence of single-crystal NMR spectra determined the principal-axis directions of the electric field gradient tensor at the $^{51}$V sites, as well as their nuclear quadrupole frequency, $ν_{\rm Q}$, and asymmetry parameter, $η$. The Knight shift, $K$, was measured for different field orientations, and the analysis of $K$ against magnetic susceptibility to extract anisotropic hyperfine couplings. Accurate spectral assignments further enabled measurements of the nuclear spin-lattice relaxation rate, $1/T_1$, for both in-plane and out-of-plane field directions. The temperature dependence of $1/T_1$ shows that out-of-plane spin fluctuations are suppressed below $\sim$20~K, whereas in-plane fluctuations are markedly enhanced, which might be understood by thermal depopulation of the low-lying crystalline electric field excited state. The notable anisotropy in $1/T_1$ indicates that the paramagnetic state of YbV$_6$Sn$_6$ is strongly affected by in-plane spin dynamics. |
| title | Investigation of the Paramagnetic State of the Kagome Kondo Lattice Compound YbV$_6$Sn$_6$: a $^{51}$V Nuclear Magnetic Resonance Study |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2506.04563 |