| Autor: |
Zhou, Boyi, Balgley, J., Lampen-Kelley, P., Yan, J. -Q., Mandrus, D. G., Henriksen, E. A. |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Physical Review B 100, 165426 (2019) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.100.165426 |
| Popis: |
We report a study of electronic transport in van der Waals heterostructures composed of flakes of the antiferromagnetic Mott insulator a-RuCl_3 placed on top of monolayer graphene Hall bars. While the zero-field transport shows a strong resemblance to that of isolated graphene, we find a consistently $p$-type Hall effect suggestive of multiband conduction, along with a non-monotonic and gate-voltage-dependent excursion of the resistivity at low temperatures that is reminiscent of transport in the presence of a magnetic phase transition. We interpret these data as evidence for charge transfer from graphene to a-RuCl_3 in an inhomogeneous device yielding both highly- and lightly-doped regions of graphene, while the latter shows a particular sensitivity to magnetism in the a-RuCl_3. Thus proximity to graphene is a means to access magnetic properties of thin layers of magnetic insulators. |
| Databáze: |
arXiv |
| Externí odkaz: |
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