دورية أكاديمية
Micromagnetometry of two-dimensional ferromagnets
| العنوان: | Micromagnetometry of two-dimensional ferromagnets |
|---|---|
| المؤلفون: | Kim, M, Kumaravadivel, P, Birkbeck, J, Kuang, W, Xu, SG, Hopkinson, DG, Knolle, J, McClarty, PA, Berdyugin, A, Ben Shalom, M, Gorbachev, R, Haigh, SJ, Liu, S, Edgar, JH, Novoselov, KS, Grigorieva, I, Geim, AK |
| المصدر: | 463 ; 457 |
| بيانات النشر: | Nature Research |
| سنة النشر: | 2019 |
| المجموعة: | Imperial College London: Spiral |
| مصطلحات موضوعية: | Science & Technology, Technology, Engineering, Electrical & Electronic, CRYSTAL, cond-mat.mes-hall |
| الوصف: | The study of atomically thin ferromagnetic crystals has led to the discovery of unusual magnetic behaviour and provided insight into the magnetic properties of bulk materials. However, the experimental techniques that have been used to explore ferromagnetism in such materials cannot probe the magnetic field directly. Here, we show that ballistic Hall micromagnetometry can be used to measure the magnetization of individual two-dimensional ferromagnets. Our devices are made by van der Waals assembly in such a way that the investigated ferromagnetic crystal is placed on top of a multi-terminal Hall bar made from encapsulated graphene. We use the micromagnetometry technique to study atomically thin chromium tribromide (CrBr3). We find that the material remains ferromagnetic down to monolayer thickness and exhibits strong out-of-plane anisotropy. We also find that the magnetic response of CrBr3 varies little with the number of layers and its temperature dependence cannot be described by the simple Ising model of two-dimensional ferromagnetism. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2520-1131 |
| العلاقة: | Nature Electronics; http://hdl.handle.net/10044/1/77807Test |
| DOI: | 10.1038/s41928-019-0302-6 |
| الإتاحة: | https://doi.org/10.1038/s41928-019-0302-6Test http://hdl.handle.net/10044/1/77807Test |
| حقوق: | © The Author(s), under exclusive licence to Springer Nature Limited 2019. The final publication is available at Springer via [insert hyperlinked DOI] |
| رقم الانضمام: | edsbas.A61066C4 |
| قاعدة البيانات: | BASE |
| تدمد: | 25201131 |
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| DOI: | 10.1038/s41928-019-0302-6 |