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

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.

doi:10.1038/s41467-022-34812-6

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

Journal Article · Thu Dec 15 00:00:00 EST 2022 · Nature Communications

DOI:https://doi.org/10.1038/s41467-022-34812-6· OSTI ID:2420932

Cheng, Guanghui ^[1]; Rahman, Mohammad Mushfiqur ^[2]; He, Zhiping ^[3]; Allcca, Andres Llacsahuanga ^[4]; Rustagi, Avinash ^[5]; Stampe, Kirstine Aggerbeck ^[6]; Zhu, Yanglin ^[7]; Yan, Shaohua ^[8]; ^[8]; ^[7]; ^[8]; ^[9]; ^[9]; Upadhyaya, Pramey ^[4]; Chen, Yong P. ^[10]

Univ. of Science and Technology of China, Hefei (China); Tohoku Univ., Sendai (Japan); Purdue Univ., West Lafayette, IN (United States); Purdue Univ., Lafayette, IN (United States)
Purdue Univ., West Lafayette, IN (United States)
Univ. of Science and Technology of China, Hefei (China)
Purdue Univ., West Lafayette, IN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Quantum Science Center (QSC)
Intel Corp., Hillsboro, OR (United States); Purdue Univ., West Lafayette, IN (United States)
Aarhus Univ. (Denmark)
Pennsylvania State Univ., University Park, PA (United States)
Renmin Univ. of China, Beijing (China)
National Institute for Materials Science (NIMS), Tsukuba (Japan)
Tohoku Univ., Sendai (Japan); Purdue Univ., West Lafayette, IN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Quantum Science Center (QSC); Aarhus Univ. (Denmark)

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.

View Accepted Manuscript (DOE)

Research Organization:: Pennsylvania State Univ., University Park, PA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0019068

OSTI ID:: 2420932

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 13; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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