Field-induced multipolar character in the dipolar ground state of the honeycomb rare-earth chalcohalide NdOF
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
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| _version_ | 1866913170561433600 |
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| author | Liu, Tiantian Cai, Yanzhen Xie, Mingtai Mei, Helin Zhang, Anmin Jin, Feng Ji, Jianting Zhang, Zheng Zhang, Qingming |
| author_facet | Liu, Tiantian Cai, Yanzhen Xie, Mingtai Mei, Helin Zhang, Anmin Jin, Feng Ji, Jianting Zhang, Zheng Zhang, Qingming |
| contents | Field-tunable reconstruction of crystalline electric field (CEF) doublets offers a promising avenue for inducing multipolar character, while its observation in real materials has been little explored so far. Here we establish the honeycomb rare-earth chalcohalide NdOF as such a platform. Raman spectroscopy identifies four CEF excitations at 1.7, 15.6, 19.2, and 80.9~meV, and a Zeeman--CEF analysis reproduces their nonlinear field splitting into seven branches. Magnetization and susceptibility over 0.1--9~T are well described by a CEF model for the total angular momentum $J = 9/2$ manifold, confirming the robustness of the extracted CEF scheme. These results demonstrate a field-driven continuous evolution of the ground-state doublet from dipolar to dipolar-multipolar character, with pressure providing a complementary tuning knob, establishing NdOF as a model system for exploring the controlled induction of multipolar components in rare-earth magnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_29896 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Field-induced multipolar character in the dipolar ground state of the honeycomb rare-earth chalcohalide NdOF Liu, Tiantian Cai, Yanzhen Xie, Mingtai Mei, Helin Zhang, Anmin Jin, Feng Ji, Jianting Zhang, Zheng Zhang, Qingming Strongly Correlated Electrons Materials Science Field-tunable reconstruction of crystalline electric field (CEF) doublets offers a promising avenue for inducing multipolar character, while its observation in real materials has been little explored so far. Here we establish the honeycomb rare-earth chalcohalide NdOF as such a platform. Raman spectroscopy identifies four CEF excitations at 1.7, 15.6, 19.2, and 80.9~meV, and a Zeeman--CEF analysis reproduces their nonlinear field splitting into seven branches. Magnetization and susceptibility over 0.1--9~T are well described by a CEF model for the total angular momentum $J = 9/2$ manifold, confirming the robustness of the extracted CEF scheme. These results demonstrate a field-driven continuous evolution of the ground-state doublet from dipolar to dipolar-multipolar character, with pressure providing a complementary tuning knob, establishing NdOF as a model system for exploring the controlled induction of multipolar components in rare-earth magnets. |
| title | Field-induced multipolar character in the dipolar ground state of the honeycomb rare-earth chalcohalide NdOF |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2605.29896 |