Emergence of electric-field-tunable interfacial ferromagnetism in 2D antiferromagnet heterostructures.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36522317.
- Also identified by DOI 10.1038/s41467-022-34812-6 and PMC identifier 9755235.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Van der Waals (vdW) magnet heterostructures have emerged as new platforms to explore exotic magnetic orders and quantum phenomena. Here, we study heterostructures of layered antiferromagnets, CrI<sub>3</sub> and CrCl<sub>3</sub>, with perpendicular and in-plane magnetic anisotropy, respectively. Using magneto-optical Kerr effect microscopy, we demonstrate out-of-plane magnetic order in the CrCl<sub>3</sub> layer proximal to CrI<sub>3</sub>, with ferromagnetic interfacial coupling between the two. Such an interlayer exchange field leads to higher critical temperature than that of either CrI<sub>3</sub> or CrCl<sub>3</sub> alone. We further demonstrate significant electric-field control of the coercivity, attributed to the naturally broken structural inversion symmetry of the heterostructure allowing unprecedented direct coupling between electric field and interfacial magnetism. These findings illustrate the opportunity to explore exotic magnetic phases and engineer spintronic devices in vdW heterostructures.