Possible quantum spin liquid state of CeTa$_7$O$_{19}$
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arXiv
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2025
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| author | Li, N. Rutherford, A. Wang, Y. Y. Liang, H. Zhou, Y. Sun, Y. Wu, D. D. Chen, P. F. Li, Q. J. Wang, H. Xie, W. Choi, E. S. Zhang, S. Z. Lee, M. Zhou, H. D. Sun, X. F. |
| author_facet | Li, N. Rutherford, A. Wang, Y. Y. Liang, H. Zhou, Y. Sun, Y. Wu, D. D. Chen, P. F. Li, Q. J. Wang, H. Xie, W. Choi, E. S. Zhang, S. Z. Lee, M. Zhou, H. D. Sun, X. F. |
| contents | CeTa$_7$O$_{19}$ is a recently found two-dimensional triangular lattice antiferromagnet without showing magnetic order. We grew high-quality CeTa$_7$O$_{19}$ single crystals and studied the low-temperature magnetic susceptibility, specific heat and thermal conductivity. The dc magnetic susceptibility and magnetization reveal its nature of effective spin-1/2, easy axis anisotropy, and antiferromagnetic spin coupling. The ultralow-temperature ac susceptibility and specific heat data indicate the absence of any phase transition down to 20 mK. The ultralow-temperature thermal conductivity ($κ$) at zero magnetic field exhibits a non-zero residual term $κ_0/T =$ 0.0056 W/K$^2$m. Although the magnetic field dependence of $κ$ is rather weak, the 14 T thermal conductivity shows an essential zero residual term. All these results point to a possible ground state of quantum spin liquid. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_00752 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Possible quantum spin liquid state of CeTa$_7$O$_{19}$ Li, N. Rutherford, A. Wang, Y. Y. Liang, H. Zhou, Y. Sun, Y. Wu, D. D. Chen, P. F. Li, Q. J. Wang, H. Xie, W. Choi, E. S. Zhang, S. Z. Lee, M. Zhou, H. D. Sun, X. F. Strongly Correlated Electrons Materials Science CeTa$_7$O$_{19}$ is a recently found two-dimensional triangular lattice antiferromagnet without showing magnetic order. We grew high-quality CeTa$_7$O$_{19}$ single crystals and studied the low-temperature magnetic susceptibility, specific heat and thermal conductivity. The dc magnetic susceptibility and magnetization reveal its nature of effective spin-1/2, easy axis anisotropy, and antiferromagnetic spin coupling. The ultralow-temperature ac susceptibility and specific heat data indicate the absence of any phase transition down to 20 mK. The ultralow-temperature thermal conductivity ($κ$) at zero magnetic field exhibits a non-zero residual term $κ_0/T =$ 0.0056 W/K$^2$m. Although the magnetic field dependence of $κ$ is rather weak, the 14 T thermal conductivity shows an essential zero residual term. All these results point to a possible ground state of quantum spin liquid. |
| title | Possible quantum spin liquid state of CeTa$_7$O$_{19}$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2503.00752 |