تقرير
Bulk properties of van-der-Waals hard ferromagnet VI3
| العنوان: | Bulk properties of van-der-Waals hard ferromagnet VI3 |
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| المؤلفون: | Son, Suhan, Coak, Matthew J., Lee, Nahyun, Kim, Jonghyeon, Kim, Tae Yun, Hamidov, Hayrullo, Cho, Hwanbeom, Liu, Cheng, Jarvis, David M., Brown, Philip A. C., Kim, Jae Hoon, Park, Cheol-Hwan, Khomskii, Daniel I., Saxena, Siddharth S., Park, Je-Geun |
| المصدر: | Phys. Rev. B 99, 041402(R) (2019) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science |
| الوصف: | We present comprehensive measurements of the structural, magnetic and electronic properties of layered van-der-Waals ferromagnet VI$_3$ down to low temperatures. Despite belonging to a well studied family of transition metal trihalides, this material has received very little attention. We outline, from high-resolution powder x-ray diffraction measurements, a corrected room-temperature crystal structure to that previously proposed and uncover a structural transition at 79 K, also seen in the heat capacity. Magnetization measurements confirm VI$_3$ to be a hard ferromagnet (9.1 kOe coercive field at 2 K) with a high degree of anisotropy, and the pressure dependence of the magnetic properties provide evidence for the two-dimensional nature of the magnetic order. Optical and electrical transport measurements show this material to be an insulator with an optical band gap of 0.67 eV - the previous theoretical predictions of d-band metallicity then lead us to believe VI$_3$ to be a correlated Mott insulator. Our latest band structure calculations support this picture and show good agreement with the experimental data. We suggest VI$_3$ to host great potential in the thriving field of low-dimensional magnetism and functional materials, together with opportunities to study and make use of low-dimensional Mott physics. Comment: 9 pages, 11 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.99.041402 |
| URL الوصول: | http://arxiv.org/abs/1812.05284 |
| رقم الأكسشن: | edsarx.1812.05284 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.99.041402 |
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