تقرير
Magnetic frustration in a van der Waals metal CeSiI
| العنوان: | Magnetic frustration in a van der Waals metal CeSiI |
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| المؤلفون: | Okuma, Ryutaro, Ritter, Clemens, Nilsen, Gøran J., Okada, Yoshinori |
| المصدر: | Phys. Rev. Materials 5, L121401 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science |
| الوصف: | The realization of magnetic frustration in a metallic van der Waals (vdW) coupled material has been sought as a promising platform to explore novel phenomena both in bulk matter and in exfoliated devices. However, a suitable material platform has been lacking so far. Here, we demonstrate that CeSiI hosts itinerant electrons coexisting with exotic magnetism. In CeSiI, the magnetic cerium atoms form a triangular bilayer structure sandwiched by van der Waals stacked iodine layers. From resistivity and magnetometry measurements, we confirm the coexistence of itinerant electrons with magnetism with dominant antiferromagnetic exchange between the strongly Ising-like Ce moments below 7 K. Neutron diffraction directly confirms magnetic order with an incommensurate propagation vector k ~ (0.28, 0, 0.19) at 1.6 K, which points to the importance of further neighbor magnetic interactions in this system. The presence of a two-step magnetic-field-induced phase transition along c axis further suggests magnetic frustration in the ground state. Our findings provide a novel material platform hosting a coexistence of itinerant electron and frustrated magnetism in a vdW system, where exotic phenomena arising from rich interplay between spin, charge and lattice in low dimension can be explored. Comment: 15 pages, 9 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevMaterials.5.L121401 |
| URL الوصول: | http://arxiv.org/abs/2107.13810 |
| رقم الأكسشن: | edsarx.2107.13810 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevMaterials.5.L121401 |
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