期刊
PHYSICAL REVIEW LETTERS
卷 121, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.121.067701
关键词
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资金
- European Regional Development Fund [NORTE-01-50145-FEDER-000019]
- Marie Curie Nano TRAIN for Growth Cofund program at the International Iberian Nanotechnology Laboratory
- Fundacao para a Ciencia e a Tecnologia [P2020-PTDC/FIS-NAN/3668/2014]
We propose spin valves where a 2D nonmagnetic conductor is intercalated between two ferromagnetic insulating layers. In this setup, the relative orientation of the magnetizations of the insulating layers can have a strong impact on the in-plane conductivity of the 2D conductor. We first show this for a graphene bilayer, described with a tight-binding model, placed between two ferromagnetic insulators. In the antiparallel configuration, a band gap opens at the Dirac point, whereas in the parallel configuration, the graphene bilayer remains conducting. We then compute the electronic structure of graphene bilayer placed between two monolayers of the ferromagnetic insulator CrI3, using density functional theory. Consistent with the model, we find that a gap opens at the Dirac point only in the antiparallel configuration.
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