Spin-glass states generated in a van der Waals magnet by alkali-ion intercalation
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| Autores principales: | , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| author | Khan, S. Aw, E. S. Y. Nagle-Cocco, L. A. V. Sud, A. Ghosh, S. Subhan, M. K. B. Xue, Z. Freeman, C. Sagkovits, D. Gutierrez-Llorente, A. Verzhbitskiy, I. Arroo, D. M. Zollitsch, C. W. Eda, G. Santos, E. J. G. Dutton, S. E. Bramwell, S. T. Howard, C. A. Kurebayashi, H. |
| author_facet | Khan, S. Aw, E. S. Y. Nagle-Cocco, L. A. V. Sud, A. Ghosh, S. Subhan, M. K. B. Xue, Z. Freeman, C. Sagkovits, D. Gutierrez-Llorente, A. Verzhbitskiy, I. Arroo, D. M. Zollitsch, C. W. Eda, G. Santos, E. J. G. Dutton, S. E. Bramwell, S. T. Howard, C. A. Kurebayashi, H. |
| contents | Tuning magnetic properties in layered van der Waals (vdW) materials has captured a significant attention due to the efficient control of ground-states by heterostructuring and external stimuli. Electron doping by electrostatic gating, interfacial charge transfer and intercalation is particularly effective in manipulating the exchange and spin-orbit properties, resulting in a control of Curie temperature ($T_{\text{C}}$) and magnetic anisotropy. Here, we discover an uncharted role of intercalation to generate magnetic frustration. As a model study, we intercalate Na atoms into the vdW gaps of pristine Cr$_2$Ge$_2$Te$_6$ (CGT) where generated magnetic frustration leads to emerging spin-glass states coexisting with a ferromagnetic order. A series of dynamic magnetic susceptibility measurements/analysis confirms the formation of magnetic clusters representing slow dynamics with a distribution of relaxation times. The intercalation also modifies other macroscopic physical parameters including the significant enhancement of $T_{\text{C}}$ from 66\,K to 240\,K and the switching of magnetic easy-hard axis direction. Our study identifies intercalation as a unique route to generate emerging frustrated spin states in simple vdW crystals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_17554 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Spin-glass states generated in a van der Waals magnet by alkali-ion intercalation Khan, S. Aw, E. S. Y. Nagle-Cocco, L. A. V. Sud, A. Ghosh, S. Subhan, M. K. B. Xue, Z. Freeman, C. Sagkovits, D. Gutierrez-Llorente, A. Verzhbitskiy, I. Arroo, D. M. Zollitsch, C. W. Eda, G. Santos, E. J. G. Dutton, S. E. Bramwell, S. T. Howard, C. A. Kurebayashi, H. Materials Science Tuning magnetic properties in layered van der Waals (vdW) materials has captured a significant attention due to the efficient control of ground-states by heterostructuring and external stimuli. Electron doping by electrostatic gating, interfacial charge transfer and intercalation is particularly effective in manipulating the exchange and spin-orbit properties, resulting in a control of Curie temperature ($T_{\text{C}}$) and magnetic anisotropy. Here, we discover an uncharted role of intercalation to generate magnetic frustration. As a model study, we intercalate Na atoms into the vdW gaps of pristine Cr$_2$Ge$_2$Te$_6$ (CGT) where generated magnetic frustration leads to emerging spin-glass states coexisting with a ferromagnetic order. A series of dynamic magnetic susceptibility measurements/analysis confirms the formation of magnetic clusters representing slow dynamics with a distribution of relaxation times. The intercalation also modifies other macroscopic physical parameters including the significant enhancement of $T_{\text{C}}$ from 66\,K to 240\,K and the switching of magnetic easy-hard axis direction. Our study identifies intercalation as a unique route to generate emerging frustrated spin states in simple vdW crystals. |
| title | Spin-glass states generated in a van der Waals magnet by alkali-ion intercalation |
| topic | Materials Science |
| url | https://arxiv.org/abs/2312.17554 |