Bulk properties of van-der-Waals hard ferromagnet VI3
| العنوان: | Bulk properties of van-der-Waals hard ferromagnet VI3 |
|---|---|
| المؤلفون: | Nahyun Lee, Hwanbeom Cho, Hayrullo Hamidov, Cheng Liu, Tae Yun Kim, Jae Hoon Kim, Suhan Son, Siddharth S. Saxena, Philip A. C. Brown, David M. Jarvis, Cheol-Hwan Park, Daniel I. Khomskii, Jonghyeon Kim, Je-Geun Park, Matthew J. Coak |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics, Focus (computing), Condensed Matter - Materials Science, Strongly Correlated Electrons (cond-mat.str-el), Graphene, Magnetism, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Engineering physics, law.invention, symbols.namesake, Condensed Matter - Strongly Correlated Electrons, Stack (abstract data type), Ferromagnetism, law, 0103 physical sciences, symbols, Condensed Matter::Strongly Correlated Electrons, van der Waals force, 010306 general physics, 0210 nano-technology |
| 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. 9 pages, 11 figures |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4d122a252e09a96fa2211919d16dad7 http://arxiv.org/abs/1812.05284 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f4d122a252e09a96fa2211919d16dad7 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |