تقرير
Spin-glass states generated in a van der Waals magnet by alkali-ion intercalation
| العنوان: | Spin-glass states generated in a van der Waals magnet by alkali-ion intercalation |
|---|---|
| المؤلفون: | 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. |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | 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. Comment: 31 pages, 18 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2312.17554 |
| رقم الأكسشن: | edsarx.2312.17554 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |