Emergence of electric-field-tunable interfacial ferromagnetism in 2D antiferromagnet heterostructures.

Content Provider	Europe PMC
Author	Cheng, Guanghui Rahman, Mohammad Mushfiqur He, Zhiping Allcca, Andres Llacsahuanga Rustagi, Avinash Stampe, Kirstine Aggerbeck Zhu, Yanglin Yan, Shaohua Tian, Shangjie Mao, Zhiqiang Lei, Hechang Watanabe, Kenji Taniguchi, Takashi Upadhyaya, Pramey Chen, Yong P.
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, CrI3 and CrCl3, with perpendicular and in-plane magnetic anisotropy, respectively. Using magneto-optical Kerr effect microscopy, we demonstrate out-of-plane magnetic order in the CrCl3 layer proximal to CrI3, with ferromagnetic interfacial coupling between the two. Such an interlayer exchange field leads to higher critical temperature than that of either CrI3 or CrCl3 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.
Journal	Nature Communications [Nat Commun]
Volume Number	13
DOI	10.1038/s41467-022-34812-6
PubMed Central reference number	PMC9755235
Issue Number	1
PubMed reference number	36522317
e-ISSN	20411723
Language	English
Publisher	Nature Publishing Group
Publisher Date	2022-12-15
Publisher Place	London
Access Restriction	Open
Subject Keyword	Magnetic properties and materials Two-dimensional materials Spintronics Surfaces, interfaces and thin films
Content Type	Text
Resource Type	Article
Subject	Chemistry Biochemistry, Genetics and Molecular Biology Physics and Astronomy