تقرير
Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3
| العنوان: | Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3 |
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| المؤلفون: | Yue, Lei, Lu, Ziyou, Yan, Kun, Wang, Le, Guo, Shu, Guo, Ruixin, Chen, Peng, Chen, Xiaobin, Mei, Jia-Wei |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | In our study, we conduct magnetization and heat capacity measurements to investigate field induced magnetic phase transitions within the newly synthesized compound K2Ni2(SeO3)3, a spin-1 dimer system arranged on a triangular lattice. From our first-principles simulations, we determine that the spin system in K2Ni2(SeO3)3 can be represented as a two-dimensional triangular-lattice spin-1 dimer model, including an intra-dimer exchange of J1 = 0.32 meV, an inter-dimer exchange of J2 = 0.79 meV, and an easy-axis anisotropy of D = 0.14 meV. The presence of easy-axis magnetic anisotropy explains the distinct magnetic phase diagrams observed under c-axis directional and in-plane magnetic fields. Notably, our investigation unveils a two-step phase transition with the magnetic field aligned with the c direction. Our findings yield valuable insights into the magnetic phase transitions inherent to geometrically frustrated magnetic systems featuring dimer structures. Comment: 11 pages, 11 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2309.10335 |
| رقم الأكسشن: | edsarx.2309.10335 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |