Ising-type quantum spin liquid state in PrMgAl$_{11}$O$_{19}$
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916491488657408 |
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| author | Li, N. Rutherford, A. Wang, Y. Y. Liang, H. Li, Q. J. Zhang, Z. J. Wang, H. Xie, W. Zhou, H. D. Sun, X. F. |
| author_facet | Li, N. Rutherford, A. Wang, Y. Y. Liang, H. Li, Q. J. Zhang, Z. J. Wang, H. Xie, W. Zhou, H. D. Sun, X. F. |
| contents | We have grown single crystals of PrMgAl$_{11}$O$_{19}$, an ideal triangular-lattice antiferromagnet, and performed magnetic susceptibility, specific heat and thermal conductivity measurements at low temperatures. The main results are as follows: (i) The temperature-dependent susceptibility shows a negligible in-plane response and the isothermal magnetization curves confirm the easy axis along the $c$ axis. (ii) The specific heat measurements reveal the absence of long-range magnetic order down to 60 mK, and the power-law temperature dependence indicates the existence of the gapless magnetic excitations in system. (iii) The ultralow-temperature thermal conductivity exhibits negligibly small residual term ($κ_0/T$) and strong spin-phonon scattering effect, suggesting that the spin excitations are also involved. Our results further demonstrate that PrMgAl$_{11}$O$_{19}$ is a rare quantum spin liquid candidate with Ising-like anisotropy. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_11167 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ising-type quantum spin liquid state in PrMgAl$_{11}$O$_{19}$ Li, N. Rutherford, A. Wang, Y. Y. Liang, H. Li, Q. J. Zhang, Z. J. Wang, H. Xie, W. Zhou, H. D. Sun, X. F. Strongly Correlated Electrons We have grown single crystals of PrMgAl$_{11}$O$_{19}$, an ideal triangular-lattice antiferromagnet, and performed magnetic susceptibility, specific heat and thermal conductivity measurements at low temperatures. The main results are as follows: (i) The temperature-dependent susceptibility shows a negligible in-plane response and the isothermal magnetization curves confirm the easy axis along the $c$ axis. (ii) The specific heat measurements reveal the absence of long-range magnetic order down to 60 mK, and the power-law temperature dependence indicates the existence of the gapless magnetic excitations in system. (iii) The ultralow-temperature thermal conductivity exhibits negligibly small residual term ($κ_0/T$) and strong spin-phonon scattering effect, suggesting that the spin excitations are also involved. Our results further demonstrate that PrMgAl$_{11}$O$_{19}$ is a rare quantum spin liquid candidate with Ising-like anisotropy. |
| title | Ising-type quantum spin liquid state in PrMgAl$_{11}$O$_{19}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2407.11167 |